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julius |
/* Xilinx MicroBlaze-specific support for 32-bit ELF
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Copyright 2009 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the
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Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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int dbg = 0;
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/microblaze.h"
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#include <assert.h>
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#define USE_RELA /* Only USE_REL is actually significant, but this is
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here are a reminder... */
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#define INST_WORD_SIZE 4
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static int ro_small_data_pointer = 0;
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static int rw_small_data_pointer = 0;
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static reloc_howto_type * microblaze_elf_howto_table [(int) R_MICROBLAZE_max];
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static reloc_howto_type microblaze_elf_howto_raw[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_MICROBLAZE_NONE, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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NULL, /* Special Function. */
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"R_MICROBLAZE_NONE", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* A standard 32 bit relocation. */
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HOWTO (R_MICROBLAZE_32, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_32", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0xffffffff, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* A standard PCREL 32 bit relocation. */
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HOWTO (R_MICROBLAZE_32_PCREL,/* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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TRUE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_32_PCREL", /* Name. */
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TRUE, /* Partial Inplace. */
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0, /* Source Mask. */
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0xffffffff, /* Dest Mask. */
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TRUE), /* PC relative offset? */
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/* A 64 bit PCREL relocation. Table-entry not really used. */
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HOWTO (R_MICROBLAZE_64_PCREL,/* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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TRUE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_64_PCREL", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0x0000ffff, /* Dest Mask. */
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TRUE), /* PC relative offset? */
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/* The low half of a PCREL 32 bit relocation. */
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HOWTO (R_MICROBLAZE_32_PCREL_LO, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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TRUE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_signed, /* Complain on overflow. */
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bfd_elf_generic_reloc, /* Special Function. */
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"R_MICROBLAZE_32_PCREL_LO", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0x0000ffff, /* Dest Mask. */
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TRUE), /* PC relative offset? */
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/* A 64 bit relocation. Table entry not really used. */
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HOWTO (R_MICROBLAZE_64, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_64", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0x0000ffff, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* The low half of a 32 bit relocation. */
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HOWTO (R_MICROBLAZE_32_LO, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_signed, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_32_LO", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0x0000ffff, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* Read-only small data section relocation. */
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HOWTO (R_MICROBLAZE_SRO32, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_SRO32", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0x0000ffff, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* Read-write small data area relocation. */
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HOWTO (R_MICROBLAZE_SRW32, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_SRW32", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0x0000ffff, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* This reloc does nothing. Used for relaxation. */
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HOWTO (R_MICROBLAZE_64_NONE, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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TRUE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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NULL, /* Special Function. */
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"R_MICROBLAZE_64_NONE",/* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* Symbol Op Symbol relocation. */
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HOWTO (R_MICROBLAZE_32_SYM_OP_SYM, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_bitfield, /* Complain on overflow. */
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bfd_elf_generic_reloc,/* Special Function. */
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"R_MICROBLAZE_32_SYM_OP_SYM", /* Name. */
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FALSE, /* Partial Inplace. */
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0, /* Source Mask. */
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0xffffffff, /* Dest Mask. */
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FALSE), /* PC relative offset? */
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_MICROBLAZE_GNU_VTINHERIT, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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0, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain on overflow. */
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| 217 |
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NULL, /* Special Function. */
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| 218 |
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"R_MICROBLAZE_GNU_VTINHERIT", /* Name. */
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| 219 |
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FALSE, /* Partial Inplace. */
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| 220 |
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0, /* Source Mask. */
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| 221 |
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0, /* Dest Mask. */
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| 222 |
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FALSE), /* PC relative offset? */
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/* GNU extension to record C++ vtable member usage. */
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HOWTO (R_MICROBLAZE_GNU_VTENTRY, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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| 228 |
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0, /* Bitsize. */
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| 229 |
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FALSE, /* PC_relative. */
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| 230 |
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain on overflow. */
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| 232 |
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_bfd_elf_rel_vtable_reloc_fn, /* Special Function. */
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| 233 |
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"R_MICROBLAZE_GNU_VTENTRY", /* Name. */
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| 234 |
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FALSE, /* Partial Inplace. */
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| 235 |
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0, /* Source Mask. */
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| 236 |
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0, /* Dest Mask. */
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| 237 |
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FALSE), /* PC relative offset? */
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| 238 |
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| 239 |
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/* A 64 bit GOTPC relocation. Table-entry not really used. */
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| 240 |
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HOWTO (R_MICROBLAZE_GOTPC_64, /* Type. */
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| 241 |
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0, /* Rightshift. */
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| 242 |
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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| 243 |
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16, /* Bitsize. */
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| 244 |
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TRUE, /* PC_relative. */
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| 245 |
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0, /* Bitpos. */
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| 246 |
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complain_overflow_dont, /* Complain on overflow. */
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| 247 |
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bfd_elf_generic_reloc, /* Special Function. */
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| 248 |
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"R_MICROBLAZE_GOTPC_64", /* Name. */
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| 249 |
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FALSE, /* Partial Inplace. */
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| 250 |
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0, /* Source Mask. */
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| 251 |
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0x0000ffff, /* Dest Mask. */
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| 252 |
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TRUE), /* PC relative offset? */
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| 253 |
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| 254 |
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/* A 64 bit GOT relocation. Table-entry not really used. */
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| 255 |
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HOWTO (R_MICROBLAZE_GOT_64, /* Type. */
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| 256 |
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0, /* Rightshift. */
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| 257 |
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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| 258 |
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16, /* Bitsize. */
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| 259 |
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FALSE, /* PC_relative. */
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| 260 |
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0, /* Bitpos. */
|
| 261 |
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complain_overflow_dont, /* Complain on overflow. */
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| 262 |
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bfd_elf_generic_reloc,/* Special Function. */
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| 263 |
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"R_MICROBLAZE_GOT_64",/* Name. */
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| 264 |
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FALSE, /* Partial Inplace. */
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| 265 |
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0, /* Source Mask. */
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| 266 |
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0x0000ffff, /* Dest Mask. */
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| 267 |
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FALSE), /* PC relative offset? */
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| 268 |
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|
| 269 |
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/* A 64 bit PLT relocation. Table-entry not really used. */
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| 270 |
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HOWTO (R_MICROBLAZE_PLT_64, /* Type. */
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| 271 |
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0, /* Rightshift. */
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| 272 |
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2, /* Size (0 = byte, 1 = short, 2 = long). */
|
| 273 |
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16, /* Bitsize. */
|
| 274 |
|
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TRUE, /* PC_relative. */
|
| 275 |
|
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0, /* Bitpos. */
|
| 276 |
|
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complain_overflow_dont, /* Complain on overflow. */
|
| 277 |
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bfd_elf_generic_reloc,/* Special Function. */
|
| 278 |
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"R_MICROBLAZE_PLT_64",/* Name. */
|
| 279 |
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FALSE, /* Partial Inplace. */
|
| 280 |
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0, /* Source Mask. */
|
| 281 |
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0x0000ffff, /* Dest Mask. */
|
| 282 |
|
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TRUE), /* PC relative offset? */
|
| 283 |
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|
|
| 284 |
|
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/* Table-entry not really used. */
|
| 285 |
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HOWTO (R_MICROBLAZE_REL, /* Type. */
|
| 286 |
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0, /* Rightshift. */
|
| 287 |
|
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2, /* Size (0 = byte, 1 = short, 2 = long). */
|
| 288 |
|
|
16, /* Bitsize. */
|
| 289 |
|
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TRUE, /* PC_relative. */
|
| 290 |
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0, /* Bitpos. */
|
| 291 |
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complain_overflow_dont, /* Complain on overflow. */
|
| 292 |
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bfd_elf_generic_reloc,/* Special Function. */
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| 293 |
|
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"R_MICROBLAZE_REL", /* Name. */
|
| 294 |
|
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FALSE, /* Partial Inplace. */
|
| 295 |
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0, /* Source Mask. */
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| 296 |
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0x0000ffff, /* Dest Mask. */
|
| 297 |
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TRUE), /* PC relative offset? */
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| 298 |
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|
|
| 299 |
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/* Table-entry not really used. */
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| 300 |
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HOWTO (R_MICROBLAZE_JUMP_SLOT,/* Type. */
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| 301 |
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0, /* Rightshift. */
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| 302 |
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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| 303 |
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16, /* Bitsize. */
|
| 304 |
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TRUE, /* PC_relative. */
|
| 305 |
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0, /* Bitpos. */
|
| 306 |
|
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complain_overflow_dont, /* Complain on overflow. */
|
| 307 |
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bfd_elf_generic_reloc,/* Special Function. */
|
| 308 |
|
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"R_MICROBLAZE_JUMP_SLOT", /* Name. */
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| 309 |
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FALSE, /* Partial Inplace. */
|
| 310 |
|
|
0, /* Source Mask. */
|
| 311 |
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0x0000ffff, /* Dest Mask. */
|
| 312 |
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TRUE), /* PC relative offset? */
|
| 313 |
|
|
|
| 314 |
|
|
/* Table-entry not really used. */
|
| 315 |
|
|
HOWTO (R_MICROBLAZE_GLOB_DAT,/* Type. */
|
| 316 |
|
|
0, /* Rightshift. */
|
| 317 |
|
|
2, /* Size (0 = byte, 1 = short, 2 = long). */
|
| 318 |
|
|
16, /* Bitsize. */
|
| 319 |
|
|
TRUE, /* PC_relative. */
|
| 320 |
|
|
0, /* Bitpos. */
|
| 321 |
|
|
complain_overflow_dont, /* Complain on overflow. */
|
| 322 |
|
|
bfd_elf_generic_reloc,/* Special Function. */
|
| 323 |
|
|
"R_MICROBLAZE_GLOB_DAT", /* Name. */
|
| 324 |
|
|
FALSE, /* Partial Inplace. */
|
| 325 |
|
|
0, /* Source Mask. */
|
| 326 |
|
|
0x0000ffff, /* Dest Mask. */
|
| 327 |
|
|
TRUE), /* PC relative offset? */
|
| 328 |
|
|
|
| 329 |
|
|
/* A 64 bit GOT relative relocation. Table-entry not really used. */
|
| 330 |
|
|
HOWTO (R_MICROBLAZE_GOTOFF_64, /* Type. */
|
| 331 |
|
|
0, /* Rightshift. */
|
| 332 |
|
|
2, /* Size (0 = byte, 1 = short, 2 = long). */
|
| 333 |
|
|
16, /* Bitsize. */
|
| 334 |
|
|
FALSE, /* PC_relative. */
|
| 335 |
|
|
0, /* Bitpos. */
|
| 336 |
|
|
complain_overflow_dont, /* Complain on overflow. */
|
| 337 |
|
|
bfd_elf_generic_reloc,/* Special Function. */
|
| 338 |
|
|
"R_MICROBLAZE_GOTOFF_64", /* Name. */
|
| 339 |
|
|
FALSE, /* Partial Inplace. */
|
| 340 |
|
|
0, /* Source Mask. */
|
| 341 |
|
|
0x0000ffff, /* Dest Mask. */
|
| 342 |
|
|
FALSE), /* PC relative offset? */
|
| 343 |
|
|
|
| 344 |
|
|
/* A 32 bit GOT relative relocation. Table-entry not really used. */
|
| 345 |
|
|
HOWTO (R_MICROBLAZE_GOTOFF_32, /* Type. */
|
| 346 |
|
|
0, /* Rightshift. */
|
| 347 |
|
|
2, /* Size (0 = byte, 1 = short, 2 = long). */
|
| 348 |
|
|
16, /* Bitsize. */
|
| 349 |
|
|
FALSE, /* PC_relative. */
|
| 350 |
|
|
0, /* Bitpos. */
|
| 351 |
|
|
complain_overflow_dont, /* Complain on overflow. */
|
| 352 |
|
|
bfd_elf_generic_reloc, /* Special Function. */
|
| 353 |
|
|
"R_MICROBLAZE_GOTOFF_32", /* Name. */
|
| 354 |
|
|
FALSE, /* Partial Inplace. */
|
| 355 |
|
|
0, /* Source Mask. */
|
| 356 |
|
|
0x0000ffff, /* Dest Mask. */
|
| 357 |
|
|
FALSE), /* PC relative offset? */
|
| 358 |
|
|
|
| 359 |
|
|
/* COPY relocation. Table-entry not really used. */
|
| 360 |
|
|
HOWTO (R_MICROBLAZE_COPY, /* Type. */
|
| 361 |
|
|
0, /* Rightshift. */
|
| 362 |
|
|
2, /* Size (0 = byte, 1 = short, 2 = long). */
|
| 363 |
|
|
16, /* Bitsize. */
|
| 364 |
|
|
FALSE, /* PC_relative. */
|
| 365 |
|
|
0, /* Bitpos. */
|
| 366 |
|
|
complain_overflow_dont, /* Complain on overflow. */
|
| 367 |
|
|
bfd_elf_generic_reloc,/* Special Function. */
|
| 368 |
|
|
"R_MICROBLAZE_COPY", /* Name. */
|
| 369 |
|
|
FALSE, /* Partial Inplace. */
|
| 370 |
|
|
0, /* Source Mask. */
|
| 371 |
|
|
0x0000ffff, /* Dest Mask. */
|
| 372 |
|
|
FALSE), /* PC relative offset? */
|
| 373 |
|
|
};
|
| 374 |
|
|
|
| 375 |
|
|
#ifndef NUM_ELEM
|
| 376 |
|
|
#define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
|
| 377 |
|
|
#endif
|
| 378 |
|
|
|
| 379 |
|
|
/* Initialize the microblaze_elf_howto_table, so that linear accesses can be done. */
|
| 380 |
|
|
|
| 381 |
|
|
static void
|
| 382 |
|
|
microblaze_elf_howto_init (void)
|
| 383 |
|
|
{
|
| 384 |
|
|
unsigned int i;
|
| 385 |
|
|
|
| 386 |
|
|
for (i = NUM_ELEM (microblaze_elf_howto_raw); i--;)
|
| 387 |
|
|
{
|
| 388 |
|
|
unsigned int type;
|
| 389 |
|
|
|
| 390 |
|
|
type = microblaze_elf_howto_raw[i].type;
|
| 391 |
|
|
|
| 392 |
|
|
BFD_ASSERT (type < NUM_ELEM (microblaze_elf_howto_table));
|
| 393 |
|
|
|
| 394 |
|
|
microblaze_elf_howto_table [type] = & microblaze_elf_howto_raw [i];
|
| 395 |
|
|
}
|
| 396 |
|
|
}
|
| 397 |
|
|
|
| 398 |
|
|
static reloc_howto_type *
|
| 399 |
|
|
microblaze_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
|
| 400 |
|
|
bfd_reloc_code_real_type code)
|
| 401 |
|
|
{
|
| 402 |
|
|
enum elf_microblaze_reloc_type microblaze_reloc = R_MICROBLAZE_NONE;
|
| 403 |
|
|
|
| 404 |
|
|
switch (code)
|
| 405 |
|
|
{
|
| 406 |
|
|
case BFD_RELOC_NONE:
|
| 407 |
|
|
microblaze_reloc = R_MICROBLAZE_NONE;
|
| 408 |
|
|
break;
|
| 409 |
|
|
case BFD_RELOC_MICROBLAZE_64_NONE:
|
| 410 |
|
|
microblaze_reloc = R_MICROBLAZE_64_NONE;
|
| 411 |
|
|
break;
|
| 412 |
|
|
case BFD_RELOC_32:
|
| 413 |
|
|
microblaze_reloc = R_MICROBLAZE_32;
|
| 414 |
|
|
break;
|
| 415 |
|
|
/* RVA is treated the same as 32 */
|
| 416 |
|
|
case BFD_RELOC_RVA:
|
| 417 |
|
|
microblaze_reloc = R_MICROBLAZE_32;
|
| 418 |
|
|
break;
|
| 419 |
|
|
case BFD_RELOC_32_PCREL:
|
| 420 |
|
|
microblaze_reloc = R_MICROBLAZE_32_PCREL;
|
| 421 |
|
|
break;
|
| 422 |
|
|
case BFD_RELOC_64_PCREL:
|
| 423 |
|
|
microblaze_reloc = R_MICROBLAZE_64_PCREL;
|
| 424 |
|
|
break;
|
| 425 |
|
|
case BFD_RELOC_MICROBLAZE_32_LO_PCREL:
|
| 426 |
|
|
microblaze_reloc = R_MICROBLAZE_32_PCREL_LO;
|
| 427 |
|
|
break;
|
| 428 |
|
|
case BFD_RELOC_64:
|
| 429 |
|
|
microblaze_reloc = R_MICROBLAZE_64;
|
| 430 |
|
|
break;
|
| 431 |
|
|
case BFD_RELOC_MICROBLAZE_32_LO:
|
| 432 |
|
|
microblaze_reloc = R_MICROBLAZE_32_LO;
|
| 433 |
|
|
break;
|
| 434 |
|
|
case BFD_RELOC_MICROBLAZE_32_ROSDA:
|
| 435 |
|
|
microblaze_reloc = R_MICROBLAZE_SRO32;
|
| 436 |
|
|
break;
|
| 437 |
|
|
case BFD_RELOC_MICROBLAZE_32_RWSDA:
|
| 438 |
|
|
microblaze_reloc = R_MICROBLAZE_SRW32;
|
| 439 |
|
|
break;
|
| 440 |
|
|
case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM:
|
| 441 |
|
|
microblaze_reloc = R_MICROBLAZE_32_SYM_OP_SYM;
|
| 442 |
|
|
break;
|
| 443 |
|
|
case BFD_RELOC_VTABLE_INHERIT:
|
| 444 |
|
|
microblaze_reloc = R_MICROBLAZE_GNU_VTINHERIT;
|
| 445 |
|
|
break;
|
| 446 |
|
|
case BFD_RELOC_VTABLE_ENTRY:
|
| 447 |
|
|
microblaze_reloc = R_MICROBLAZE_GNU_VTENTRY;
|
| 448 |
|
|
break;
|
| 449 |
|
|
case BFD_RELOC_MICROBLAZE_64_GOTPC:
|
| 450 |
|
|
microblaze_reloc = R_MICROBLAZE_GOTPC_64;
|
| 451 |
|
|
break;
|
| 452 |
|
|
case BFD_RELOC_MICROBLAZE_64_GOT:
|
| 453 |
|
|
microblaze_reloc = R_MICROBLAZE_GOT_64;
|
| 454 |
|
|
break;
|
| 455 |
|
|
case BFD_RELOC_MICROBLAZE_64_PLT:
|
| 456 |
|
|
microblaze_reloc = R_MICROBLAZE_PLT_64;
|
| 457 |
|
|
break;
|
| 458 |
|
|
case BFD_RELOC_MICROBLAZE_64_GOTOFF:
|
| 459 |
|
|
microblaze_reloc = R_MICROBLAZE_GOTOFF_64;
|
| 460 |
|
|
break;
|
| 461 |
|
|
case BFD_RELOC_MICROBLAZE_32_GOTOFF:
|
| 462 |
|
|
microblaze_reloc = R_MICROBLAZE_GOTOFF_32;
|
| 463 |
|
|
break;
|
| 464 |
|
|
case BFD_RELOC_MICROBLAZE_COPY:
|
| 465 |
|
|
microblaze_reloc = R_MICROBLAZE_COPY;
|
| 466 |
|
|
break;
|
| 467 |
|
|
default:
|
| 468 |
|
|
return (reloc_howto_type *) NULL;
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
|
| 472 |
|
|
/* Initialize howto table if needed. */
|
| 473 |
|
|
microblaze_elf_howto_init ();
|
| 474 |
|
|
|
| 475 |
|
|
return microblaze_elf_howto_table [(int) microblaze_reloc];
|
| 476 |
|
|
};
|
| 477 |
|
|
|
| 478 |
|
|
static reloc_howto_type *
|
| 479 |
|
|
microblaze_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 480 |
|
|
const char *r_name)
|
| 481 |
|
|
{
|
| 482 |
|
|
unsigned int i;
|
| 483 |
|
|
|
| 484 |
|
|
for (i = 0; i < NUM_ELEM (microblaze_elf_howto_raw); i++)
|
| 485 |
|
|
if (microblaze_elf_howto_raw[i].name != NULL
|
| 486 |
|
|
&& strcasecmp (microblaze_elf_howto_raw[i].name, r_name) == 0)
|
| 487 |
|
|
return µblaze_elf_howto_raw[i];
|
| 488 |
|
|
|
| 489 |
|
|
return NULL;
|
| 490 |
|
|
}
|
| 491 |
|
|
|
| 492 |
|
|
/* Set the howto pointer for a RCE ELF reloc. */
|
| 493 |
|
|
|
| 494 |
|
|
static void
|
| 495 |
|
|
microblaze_elf_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
|
| 496 |
|
|
arelent * cache_ptr,
|
| 497 |
|
|
Elf_Internal_Rela * dst)
|
| 498 |
|
|
{
|
| 499 |
|
|
if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
|
| 500 |
|
|
/* Initialize howto table if needed. */
|
| 501 |
|
|
microblaze_elf_howto_init ();
|
| 502 |
|
|
|
| 503 |
|
|
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_MICROBLAZE_max);
|
| 504 |
|
|
|
| 505 |
|
|
cache_ptr->howto = microblaze_elf_howto_table [ELF32_R_TYPE (dst->r_info)];
|
| 506 |
|
|
}
|
| 507 |
|
|
|
| 508 |
|
|
/* Microblaze ELF local labels start with 'L.' or '$L', not '.L'. */
|
| 509 |
|
|
|
| 510 |
|
|
static bfd_boolean
|
| 511 |
|
|
microblaze_elf_is_local_label_name (bfd *abfd, const char *name)
|
| 512 |
|
|
{
|
| 513 |
|
|
if (name[0] == 'L' && name[1] == '.')
|
| 514 |
|
|
return TRUE;
|
| 515 |
|
|
|
| 516 |
|
|
if (name[0] == '$' && name[1] == 'L')
|
| 517 |
|
|
return TRUE;
|
| 518 |
|
|
|
| 519 |
|
|
/* With gcc, the labels go back to starting with '.', so we accept
|
| 520 |
|
|
the generic ELF local label syntax as well. */
|
| 521 |
|
|
return _bfd_elf_is_local_label_name (abfd, name);
|
| 522 |
|
|
}
|
| 523 |
|
|
|
| 524 |
|
|
/* The microblaze linker (like many others) needs to keep track of
|
| 525 |
|
|
the number of relocs that it decides to copy as dynamic relocs in
|
| 526 |
|
|
check_relocs for each symbol. This is so that it can later discard
|
| 527 |
|
|
them if they are found to be unnecessary. We store the information
|
| 528 |
|
|
in a field extending the regular ELF linker hash table. */
|
| 529 |
|
|
|
| 530 |
|
|
struct elf32_mb_dyn_relocs
|
| 531 |
|
|
{
|
| 532 |
|
|
struct elf32_mb_dyn_relocs *next;
|
| 533 |
|
|
|
| 534 |
|
|
/* The input section of the reloc. */
|
| 535 |
|
|
asection *sec;
|
| 536 |
|
|
|
| 537 |
|
|
/* Total number of relocs copied for the input section. */
|
| 538 |
|
|
bfd_size_type count;
|
| 539 |
|
|
|
| 540 |
|
|
/* Number of pc-relative relocs copied for the input section. */
|
| 541 |
|
|
bfd_size_type pc_count;
|
| 542 |
|
|
};
|
| 543 |
|
|
|
| 544 |
|
|
/* ELF linker hash entry. */
|
| 545 |
|
|
|
| 546 |
|
|
struct elf32_mb_link_hash_entry
|
| 547 |
|
|
{
|
| 548 |
|
|
struct elf_link_hash_entry elf;
|
| 549 |
|
|
|
| 550 |
|
|
/* Track dynamic relocs copied for this symbol. */
|
| 551 |
|
|
struct elf32_mb_dyn_relocs *dyn_relocs;
|
| 552 |
|
|
|
| 553 |
|
|
};
|
| 554 |
|
|
|
| 555 |
|
|
#define elf32_mb_hash_entry(ent) ((struct elf32_mb_link_hash_entry *)(ent))
|
| 556 |
|
|
|
| 557 |
|
|
/* ELF linker hash table. */
|
| 558 |
|
|
|
| 559 |
|
|
struct elf32_mb_link_hash_table
|
| 560 |
|
|
{
|
| 561 |
|
|
struct elf_link_hash_table elf;
|
| 562 |
|
|
|
| 563 |
|
|
/* Short-cuts to get to dynamic linker sections. */
|
| 564 |
|
|
asection *sgot;
|
| 565 |
|
|
asection *sgotplt;
|
| 566 |
|
|
asection *srelgot;
|
| 567 |
|
|
asection *splt;
|
| 568 |
|
|
asection *srelplt;
|
| 569 |
|
|
asection *sdynbss;
|
| 570 |
|
|
asection *srelbss;
|
| 571 |
|
|
|
| 572 |
|
|
/* Small local sym to section mapping cache. */
|
| 573 |
|
|
struct sym_cache sym_sec;
|
| 574 |
|
|
};
|
| 575 |
|
|
|
| 576 |
|
|
/* Get the ELF linker hash table from a link_info structure. */
|
| 577 |
|
|
|
| 578 |
|
|
#define elf32_mb_hash_table(p) \
|
| 579 |
|
|
((struct elf32_mb_link_hash_table *) ((p)->hash))
|
| 580 |
|
|
|
| 581 |
|
|
/* Create an entry in a microblaze ELF linker hash table. */
|
| 582 |
|
|
|
| 583 |
|
|
static struct bfd_hash_entry *
|
| 584 |
|
|
link_hash_newfunc (struct bfd_hash_entry *entry,
|
| 585 |
|
|
struct bfd_hash_table *table,
|
| 586 |
|
|
const char *string)
|
| 587 |
|
|
{
|
| 588 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 589 |
|
|
subclass. */
|
| 590 |
|
|
if (entry == NULL)
|
| 591 |
|
|
{
|
| 592 |
|
|
entry = bfd_hash_allocate (table,
|
| 593 |
|
|
sizeof (struct elf32_mb_link_hash_entry));
|
| 594 |
|
|
if (entry == NULL)
|
| 595 |
|
|
return entry;
|
| 596 |
|
|
}
|
| 597 |
|
|
|
| 598 |
|
|
/* Call the allocation method of the superclass. */
|
| 599 |
|
|
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
| 600 |
|
|
if (entry != NULL)
|
| 601 |
|
|
{
|
| 602 |
|
|
struct elf32_mb_link_hash_entry *eh;
|
| 603 |
|
|
|
| 604 |
|
|
eh = (struct elf32_mb_link_hash_entry *) entry;
|
| 605 |
|
|
eh->dyn_relocs = NULL;
|
| 606 |
|
|
}
|
| 607 |
|
|
|
| 608 |
|
|
return entry;
|
| 609 |
|
|
}
|
| 610 |
|
|
|
| 611 |
|
|
/* Create a mb ELF linker hash table. */
|
| 612 |
|
|
|
| 613 |
|
|
static struct bfd_link_hash_table *
|
| 614 |
|
|
microblaze_elf_link_hash_table_create (bfd *abfd)
|
| 615 |
|
|
{
|
| 616 |
|
|
struct elf32_mb_link_hash_table *ret;
|
| 617 |
|
|
bfd_size_type amt = sizeof (struct elf32_mb_link_hash_table);
|
| 618 |
|
|
|
| 619 |
|
|
ret = (struct elf32_mb_link_hash_table *) bfd_zmalloc (amt);
|
| 620 |
|
|
if (ret == NULL)
|
| 621 |
|
|
return NULL;
|
| 622 |
|
|
|
| 623 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
|
| 624 |
|
|
sizeof (struct elf32_mb_link_hash_entry)))
|
| 625 |
|
|
{
|
| 626 |
|
|
free (ret);
|
| 627 |
|
|
return NULL;
|
| 628 |
|
|
}
|
| 629 |
|
|
|
| 630 |
|
|
return &ret->elf.root;
|
| 631 |
|
|
}
|
| 632 |
|
|
|
| 633 |
|
|
/* Set the values of the small data pointers. */
|
| 634 |
|
|
|
| 635 |
|
|
static void
|
| 636 |
|
|
microblaze_elf_final_sdp (struct bfd_link_info *info)
|
| 637 |
|
|
{
|
| 638 |
|
|
struct bfd_link_hash_entry *h;
|
| 639 |
|
|
|
| 640 |
|
|
h = bfd_link_hash_lookup (info->hash, RO_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
|
| 641 |
|
|
if (h != (struct bfd_link_hash_entry *) NULL
|
| 642 |
|
|
&& h->type == bfd_link_hash_defined)
|
| 643 |
|
|
ro_small_data_pointer = (h->u.def.value
|
| 644 |
|
|
+ h->u.def.section->output_section->vma
|
| 645 |
|
|
+ h->u.def.section->output_offset);
|
| 646 |
|
|
|
| 647 |
|
|
h = bfd_link_hash_lookup (info->hash, RW_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
|
| 648 |
|
|
if (h != (struct bfd_link_hash_entry *) NULL
|
| 649 |
|
|
&& h->type == bfd_link_hash_defined)
|
| 650 |
|
|
rw_small_data_pointer = (h->u.def.value
|
| 651 |
|
|
+ h->u.def.section->output_section->vma
|
| 652 |
|
|
+ h->u.def.section->output_offset);
|
| 653 |
|
|
}
|
| 654 |
|
|
|
| 655 |
|
|
/* This code is taken from elf32-m32r.c
|
| 656 |
|
|
There is some attempt to make this function usable for many architectures,
|
| 657 |
|
|
both USE_REL and USE_RELA ['twould be nice if such a critter existed],
|
| 658 |
|
|
if only to serve as a learning tool.
|
| 659 |
|
|
|
| 660 |
|
|
The RELOCATE_SECTION function is called by the new ELF backend linker
|
| 661 |
|
|
to handle the relocations for a section.
|
| 662 |
|
|
|
| 663 |
|
|
The relocs are always passed as Rela structures; if the section
|
| 664 |
|
|
actually uses Rel structures, the r_addend field will always be
|
| 665 |
|
|
zero.
|
| 666 |
|
|
|
| 667 |
|
|
This function is responsible for adjust the section contents as
|
| 668 |
|
|
necessary, and (if using Rela relocs and generating a
|
| 669 |
|
|
relocatable output file) adjusting the reloc addend as
|
| 670 |
|
|
necessary.
|
| 671 |
|
|
|
| 672 |
|
|
This function does not have to worry about setting the reloc
|
| 673 |
|
|
address or the reloc symbol index.
|
| 674 |
|
|
|
| 675 |
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
| 676 |
|
|
|
| 677 |
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
| 678 |
|
|
corresponding to the st_shndx field of each local symbol.
|
| 679 |
|
|
|
| 680 |
|
|
The global hash table entry for the global symbols can be found
|
| 681 |
|
|
via elf_sym_hashes (input_bfd).
|
| 682 |
|
|
|
| 683 |
|
|
When generating relocatable output, this function must handle
|
| 684 |
|
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
| 685 |
|
|
going to be the section symbol corresponding to the output
|
| 686 |
|
|
section, which means that the addend must be adjusted
|
| 687 |
|
|
accordingly. */
|
| 688 |
|
|
|
| 689 |
|
|
static bfd_boolean
|
| 690 |
|
|
microblaze_elf_relocate_section (bfd *output_bfd,
|
| 691 |
|
|
struct bfd_link_info *info,
|
| 692 |
|
|
bfd *input_bfd,
|
| 693 |
|
|
asection *input_section,
|
| 694 |
|
|
bfd_byte *contents,
|
| 695 |
|
|
Elf_Internal_Rela *relocs,
|
| 696 |
|
|
Elf_Internal_Sym *local_syms,
|
| 697 |
|
|
asection **local_sections)
|
| 698 |
|
|
{
|
| 699 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 700 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 701 |
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
|
| 702 |
|
|
Elf_Internal_Rela *rel, *relend;
|
| 703 |
|
|
/* Assume success. */
|
| 704 |
|
|
bfd_boolean ret = TRUE;
|
| 705 |
|
|
asection *sreloc;
|
| 706 |
|
|
bfd_vma *local_got_offsets;
|
| 707 |
|
|
|
| 708 |
|
|
if (!microblaze_elf_howto_table[R_MICROBLAZE_max-1])
|
| 709 |
|
|
microblaze_elf_howto_init ();
|
| 710 |
|
|
|
| 711 |
|
|
htab = elf32_mb_hash_table (info);
|
| 712 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
| 713 |
|
|
|
| 714 |
|
|
sreloc = elf_section_data (input_section)->sreloc;
|
| 715 |
|
|
|
| 716 |
|
|
rel = relocs;
|
| 717 |
|
|
relend = relocs + input_section->reloc_count;
|
| 718 |
|
|
for (; rel < relend; rel++)
|
| 719 |
|
|
{
|
| 720 |
|
|
int r_type;
|
| 721 |
|
|
reloc_howto_type *howto;
|
| 722 |
|
|
unsigned long r_symndx;
|
| 723 |
|
|
bfd_vma addend = rel->r_addend;
|
| 724 |
|
|
bfd_vma offset = rel->r_offset;
|
| 725 |
|
|
struct elf_link_hash_entry *h;
|
| 726 |
|
|
Elf_Internal_Sym *sym;
|
| 727 |
|
|
asection *sec;
|
| 728 |
|
|
const char *sym_name;
|
| 729 |
|
|
bfd_reloc_status_type r = bfd_reloc_ok;
|
| 730 |
|
|
const char *errmsg = NULL;
|
| 731 |
|
|
bfd_boolean unresolved_reloc = FALSE;
|
| 732 |
|
|
|
| 733 |
|
|
h = NULL;
|
| 734 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 735 |
|
|
if (r_type < 0 || r_type >= (int) R_MICROBLAZE_max)
|
| 736 |
|
|
{
|
| 737 |
|
|
(*_bfd_error_handler) (_("%s: unknown relocation type %d"),
|
| 738 |
|
|
bfd_get_filename (input_bfd), (int) r_type);
|
| 739 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 740 |
|
|
ret = FALSE;
|
| 741 |
|
|
continue;
|
| 742 |
|
|
}
|
| 743 |
|
|
|
| 744 |
|
|
howto = microblaze_elf_howto_table[r_type];
|
| 745 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 746 |
|
|
|
| 747 |
|
|
if (info->relocatable)
|
| 748 |
|
|
{
|
| 749 |
|
|
/* This is a relocatable link. We don't have to change
|
| 750 |
|
|
anything, unless the reloc is against a section symbol,
|
| 751 |
|
|
in which case we have to adjust according to where the
|
| 752 |
|
|
section symbol winds up in the output section. */
|
| 753 |
|
|
sec = NULL;
|
| 754 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 755 |
|
|
/* External symbol. */
|
| 756 |
|
|
continue;
|
| 757 |
|
|
|
| 758 |
|
|
/* Local symbol. */
|
| 759 |
|
|
sym = local_syms + r_symndx;
|
| 760 |
|
|
sym_name = "<local symbol>";
|
| 761 |
|
|
/* STT_SECTION: symbol is associated with a section. */
|
| 762 |
|
|
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
| 763 |
|
|
/* Symbol isn't associated with a section. Nothing to do. */
|
| 764 |
|
|
continue;
|
| 765 |
|
|
|
| 766 |
|
|
sec = local_sections[r_symndx];
|
| 767 |
|
|
addend += sec->output_offset + sym->st_value;
|
| 768 |
|
|
#ifndef USE_REL
|
| 769 |
|
|
/* This can't be done for USE_REL because it doesn't mean anything
|
| 770 |
|
|
and elf_link_input_bfd asserts this stays zero. */
|
| 771 |
|
|
/* rel->r_addend = addend; */
|
| 772 |
|
|
#endif
|
| 773 |
|
|
|
| 774 |
|
|
#ifndef USE_REL
|
| 775 |
|
|
/* Addends are stored with relocs. We're done. */
|
| 776 |
|
|
continue;
|
| 777 |
|
|
#else /* USE_REL */
|
| 778 |
|
|
/* If partial_inplace, we need to store any additional addend
|
| 779 |
|
|
back in the section. */
|
| 780 |
|
|
if (!howto->partial_inplace)
|
| 781 |
|
|
continue;
|
| 782 |
|
|
/* ??? Here is a nice place to call a special_function like handler. */
|
| 783 |
|
|
r = _bfd_relocate_contents (howto, input_bfd, addend,
|
| 784 |
|
|
contents + offset);
|
| 785 |
|
|
#endif /* USE_REL */
|
| 786 |
|
|
}
|
| 787 |
|
|
else
|
| 788 |
|
|
{
|
| 789 |
|
|
bfd_vma relocation;
|
| 790 |
|
|
|
| 791 |
|
|
/* This is a final link. */
|
| 792 |
|
|
sym = NULL;
|
| 793 |
|
|
sec = NULL;
|
| 794 |
|
|
unresolved_reloc = FALSE;
|
| 795 |
|
|
|
| 796 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 797 |
|
|
{
|
| 798 |
|
|
/* Local symbol. */
|
| 799 |
|
|
sym = local_syms + r_symndx;
|
| 800 |
|
|
sec = local_sections[r_symndx];
|
| 801 |
|
|
if (sec == 0)
|
| 802 |
|
|
continue;
|
| 803 |
|
|
sym_name = "<local symbol>";
|
| 804 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 805 |
|
|
/* r_addend may have changed if the reference section was
|
| 806 |
|
|
a merge section. */
|
| 807 |
|
|
addend = rel->r_addend;
|
| 808 |
|
|
}
|
| 809 |
|
|
else
|
| 810 |
|
|
{
|
| 811 |
|
|
/* External symbol. */
|
| 812 |
|
|
bfd_boolean warned ATTRIBUTE_UNUSED;
|
| 813 |
|
|
|
| 814 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 815 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 816 |
|
|
h, sec, relocation,
|
| 817 |
|
|
unresolved_reloc, warned);
|
| 818 |
|
|
sym_name = h->root.root.string;
|
| 819 |
|
|
}
|
| 820 |
|
|
|
| 821 |
|
|
/* Sanity check the address. */
|
| 822 |
|
|
if (offset > bfd_get_section_limit (output_bfd, input_section))
|
| 823 |
|
|
{
|
| 824 |
|
|
r = bfd_reloc_outofrange;
|
| 825 |
|
|
goto check_reloc;
|
| 826 |
|
|
}
|
| 827 |
|
|
|
| 828 |
|
|
switch ((int) r_type)
|
| 829 |
|
|
{
|
| 830 |
|
|
case (int) R_MICROBLAZE_SRO32 :
|
| 831 |
|
|
{
|
| 832 |
|
|
const char *name;
|
| 833 |
|
|
|
| 834 |
|
|
/* Only relocate if the symbol is defined. */
|
| 835 |
|
|
if (sec)
|
| 836 |
|
|
{
|
| 837 |
|
|
name = bfd_get_section_name (abfd, sec);
|
| 838 |
|
|
|
| 839 |
|
|
if (strcmp (name, ".sdata2") == 0
|
| 840 |
|
|
|| strcmp (name, ".sbss2") == 0)
|
| 841 |
|
|
{
|
| 842 |
|
|
if (ro_small_data_pointer == 0)
|
| 843 |
|
|
microblaze_elf_final_sdp (info);
|
| 844 |
|
|
if (ro_small_data_pointer == 0)
|
| 845 |
|
|
{
|
| 846 |
|
|
ret = FALSE;
|
| 847 |
|
|
r = bfd_reloc_undefined;
|
| 848 |
|
|
goto check_reloc;
|
| 849 |
|
|
}
|
| 850 |
|
|
|
| 851 |
|
|
/* At this point `relocation' contains the object's
|
| 852 |
|
|
address. */
|
| 853 |
|
|
relocation -= ro_small_data_pointer;
|
| 854 |
|
|
/* Now it contains the offset from _SDA2_BASE_. */
|
| 855 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd,
|
| 856 |
|
|
input_section,
|
| 857 |
|
|
contents, offset,
|
| 858 |
|
|
relocation, addend);
|
| 859 |
|
|
}
|
| 860 |
|
|
else
|
| 861 |
|
|
{
|
| 862 |
|
|
(*_bfd_error_handler) (_("%s: The target (%s) of an %s relocation is in the wrong section (%s)"),
|
| 863 |
|
|
bfd_get_filename (input_bfd),
|
| 864 |
|
|
sym_name,
|
| 865 |
|
|
microblaze_elf_howto_table[(int) r_type]->name,
|
| 866 |
|
|
bfd_get_section_name (abfd, sec));
|
| 867 |
|
|
/*bfd_set_error (bfd_error_bad_value); ??? why? */
|
| 868 |
|
|
ret = FALSE;
|
| 869 |
|
|
continue;
|
| 870 |
|
|
}
|
| 871 |
|
|
}
|
| 872 |
|
|
}
|
| 873 |
|
|
break;
|
| 874 |
|
|
|
| 875 |
|
|
case (int) R_MICROBLAZE_SRW32 :
|
| 876 |
|
|
{
|
| 877 |
|
|
const char *name;
|
| 878 |
|
|
|
| 879 |
|
|
/* Only relocate if the symbol is defined. */
|
| 880 |
|
|
if (sec)
|
| 881 |
|
|
{
|
| 882 |
|
|
name = bfd_get_section_name (abfd, sec);
|
| 883 |
|
|
|
| 884 |
|
|
if (strcmp (name, ".sdata") == 0
|
| 885 |
|
|
|| strcmp (name, ".sbss") == 0)
|
| 886 |
|
|
{
|
| 887 |
|
|
if (rw_small_data_pointer == 0)
|
| 888 |
|
|
microblaze_elf_final_sdp (info);
|
| 889 |
|
|
if (rw_small_data_pointer == 0)
|
| 890 |
|
|
{
|
| 891 |
|
|
ret = FALSE;
|
| 892 |
|
|
r = bfd_reloc_undefined;
|
| 893 |
|
|
goto check_reloc;
|
| 894 |
|
|
}
|
| 895 |
|
|
|
| 896 |
|
|
/* At this point `relocation' contains the object's
|
| 897 |
|
|
address. */
|
| 898 |
|
|
relocation -= rw_small_data_pointer;
|
| 899 |
|
|
/* Now it contains the offset from _SDA_BASE_. */
|
| 900 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd,
|
| 901 |
|
|
input_section,
|
| 902 |
|
|
contents, offset,
|
| 903 |
|
|
relocation, addend);
|
| 904 |
|
|
}
|
| 905 |
|
|
else
|
| 906 |
|
|
{
|
| 907 |
|
|
(*_bfd_error_handler) (_("%s: The target (%s) of an %s relocation is in the wrong section (%s)"),
|
| 908 |
|
|
bfd_get_filename (input_bfd),
|
| 909 |
|
|
sym_name,
|
| 910 |
|
|
microblaze_elf_howto_table[(int) r_type]->name,
|
| 911 |
|
|
bfd_get_section_name (abfd, sec));
|
| 912 |
|
|
/*bfd_set_error (bfd_error_bad_value); ??? why? */
|
| 913 |
|
|
ret = FALSE;
|
| 914 |
|
|
continue;
|
| 915 |
|
|
}
|
| 916 |
|
|
}
|
| 917 |
|
|
}
|
| 918 |
|
|
break;
|
| 919 |
|
|
|
| 920 |
|
|
case (int) R_MICROBLAZE_32_SYM_OP_SYM:
|
| 921 |
|
|
break; /* Do nothing. */
|
| 922 |
|
|
|
| 923 |
|
|
case (int) R_MICROBLAZE_GOTPC_64:
|
| 924 |
|
|
relocation = htab->sgotplt->output_section->vma
|
| 925 |
|
|
+ htab->sgotplt->output_offset;
|
| 926 |
|
|
relocation -= (input_section->output_section->vma
|
| 927 |
|
|
+ input_section->output_offset
|
| 928 |
|
|
+ offset + INST_WORD_SIZE);
|
| 929 |
|
|
relocation += addend;
|
| 930 |
|
|
bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
|
| 931 |
|
|
contents + offset + 2);
|
| 932 |
|
|
bfd_put_16 (input_bfd, relocation & 0xffff,
|
| 933 |
|
|
contents + offset + 2 + INST_WORD_SIZE);
|
| 934 |
|
|
break;
|
| 935 |
|
|
|
| 936 |
|
|
case (int) R_MICROBLAZE_PLT_64:
|
| 937 |
|
|
{
|
| 938 |
|
|
bfd_vma immediate;
|
| 939 |
|
|
if (htab->splt != NULL && h != NULL
|
| 940 |
|
|
&& h->plt.offset != (bfd_vma) -1)
|
| 941 |
|
|
{
|
| 942 |
|
|
relocation = (htab->splt->output_section->vma
|
| 943 |
|
|
+ htab->splt->output_offset
|
| 944 |
|
|
+ h->plt.offset);
|
| 945 |
|
|
unresolved_reloc = FALSE;
|
| 946 |
|
|
immediate = relocation - (input_section->output_section->vma
|
| 947 |
|
|
+ input_section->output_offset
|
| 948 |
|
|
+ offset + INST_WORD_SIZE);
|
| 949 |
|
|
bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
|
| 950 |
|
|
contents + offset + 2);
|
| 951 |
|
|
bfd_put_16 (input_bfd, immediate & 0xffff,
|
| 952 |
|
|
contents + offset + 2 + INST_WORD_SIZE);
|
| 953 |
|
|
}
|
| 954 |
|
|
else
|
| 955 |
|
|
{
|
| 956 |
|
|
relocation -= (input_section->output_section->vma
|
| 957 |
|
|
+ input_section->output_offset
|
| 958 |
|
|
+ offset + INST_WORD_SIZE);
|
| 959 |
|
|
immediate = relocation;
|
| 960 |
|
|
bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
|
| 961 |
|
|
contents + offset + 2);
|
| 962 |
|
|
bfd_put_16 (input_bfd, immediate & 0xffff,
|
| 963 |
|
|
contents + offset + 2 + INST_WORD_SIZE);
|
| 964 |
|
|
}
|
| 965 |
|
|
break;
|
| 966 |
|
|
}
|
| 967 |
|
|
|
| 968 |
|
|
case (int) R_MICROBLAZE_GOT_64:
|
| 969 |
|
|
{
|
| 970 |
|
|
if (htab->sgot == NULL)
|
| 971 |
|
|
abort ();
|
| 972 |
|
|
if (h == NULL)
|
| 973 |
|
|
{
|
| 974 |
|
|
bfd_vma off;
|
| 975 |
|
|
if (local_got_offsets == NULL)
|
| 976 |
|
|
abort ();
|
| 977 |
|
|
off = local_got_offsets[r_symndx];
|
| 978 |
|
|
/* The LSB indicates whether we've already
|
| 979 |
|
|
created relocation. */
|
| 980 |
|
|
if (off & 1)
|
| 981 |
|
|
off &= ~1;
|
| 982 |
|
|
else
|
| 983 |
|
|
{
|
| 984 |
|
|
bfd_put_32 (output_bfd, relocation + addend,
|
| 985 |
|
|
htab->sgot->contents + off);
|
| 986 |
|
|
|
| 987 |
|
|
if (info->shared)
|
| 988 |
|
|
{
|
| 989 |
|
|
Elf_Internal_Rela outrel;
|
| 990 |
|
|
bfd_byte *loc;
|
| 991 |
|
|
if (htab->srelgot == NULL)
|
| 992 |
|
|
abort ();
|
| 993 |
|
|
outrel.r_offset = (htab->sgot->output_section->vma
|
| 994 |
|
|
+ htab->sgot->output_offset
|
| 995 |
|
|
+ off);
|
| 996 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL);
|
| 997 |
|
|
outrel.r_addend = relocation + addend;
|
| 998 |
|
|
loc = htab->srelgot->contents;
|
| 999 |
|
|
loc += htab->srelgot->reloc_count++
|
| 1000 |
|
|
* sizeof (Elf32_External_Rela);
|
| 1001 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
| 1002 |
|
|
}
|
| 1003 |
|
|
local_got_offsets[r_symndx] |= 1;
|
| 1004 |
|
|
}
|
| 1005 |
|
|
relocation = htab->sgot->output_section->vma
|
| 1006 |
|
|
+ htab->sgot->output_offset + off
|
| 1007 |
|
|
- htab->sgotplt->output_section->vma
|
| 1008 |
|
|
- htab->sgotplt->output_offset;
|
| 1009 |
|
|
unresolved_reloc = FALSE;
|
| 1010 |
|
|
}
|
| 1011 |
|
|
else
|
| 1012 |
|
|
{
|
| 1013 |
|
|
if (htab->sgotplt != NULL && h != NULL
|
| 1014 |
|
|
&& h->got.offset != (bfd_vma) -1)
|
| 1015 |
|
|
{
|
| 1016 |
|
|
bfd_put_32 (output_bfd, relocation + addend,
|
| 1017 |
|
|
htab->sgot->contents + h->got.offset);
|
| 1018 |
|
|
relocation = htab->sgot->output_section->vma
|
| 1019 |
|
|
+ htab->sgot->output_offset
|
| 1020 |
|
|
+ h->got.offset
|
| 1021 |
|
|
- htab->sgotplt->output_section->vma
|
| 1022 |
|
|
- htab->sgotplt->output_offset;
|
| 1023 |
|
|
unresolved_reloc = FALSE;
|
| 1024 |
|
|
}
|
| 1025 |
|
|
else
|
| 1026 |
|
|
abort (); /* ??? */
|
| 1027 |
|
|
}
|
| 1028 |
|
|
bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
|
| 1029 |
|
|
contents + offset + 2);
|
| 1030 |
|
|
bfd_put_16 (input_bfd, relocation & 0xffff,
|
| 1031 |
|
|
contents + offset + 2 + INST_WORD_SIZE);
|
| 1032 |
|
|
break;
|
| 1033 |
|
|
}
|
| 1034 |
|
|
|
| 1035 |
|
|
case (int) R_MICROBLAZE_GOTOFF_64:
|
| 1036 |
|
|
{
|
| 1037 |
|
|
bfd_vma immediate;
|
| 1038 |
|
|
unsigned short lo, high;
|
| 1039 |
|
|
relocation += addend;
|
| 1040 |
|
|
relocation -= htab->sgotplt->output_section->vma
|
| 1041 |
|
|
+ htab->sgotplt->output_offset;
|
| 1042 |
|
|
/* Write this value into correct location. */
|
| 1043 |
|
|
immediate = relocation;
|
| 1044 |
|
|
lo = immediate & 0x0000ffff;
|
| 1045 |
|
|
high = (immediate >> 16) & 0x0000ffff;
|
| 1046 |
|
|
bfd_put_16 (input_bfd, high, contents + offset + 2);
|
| 1047 |
|
|
bfd_put_16 (input_bfd, lo, contents + offset + INST_WORD_SIZE + 2);
|
| 1048 |
|
|
break;
|
| 1049 |
|
|
}
|
| 1050 |
|
|
|
| 1051 |
|
|
case (int) R_MICROBLAZE_GOTOFF_32:
|
| 1052 |
|
|
{
|
| 1053 |
|
|
relocation += addend;
|
| 1054 |
|
|
relocation -= htab->sgotplt->output_section->vma
|
| 1055 |
|
|
+ htab->sgotplt->output_offset;
|
| 1056 |
|
|
/* Write this value into correct location. */
|
| 1057 |
|
|
bfd_put_32 (input_bfd, relocation, contents + offset);
|
| 1058 |
|
|
break;
|
| 1059 |
|
|
}
|
| 1060 |
|
|
|
| 1061 |
|
|
case (int) R_MICROBLAZE_64_PCREL :
|
| 1062 |
|
|
case (int) R_MICROBLAZE_64:
|
| 1063 |
|
|
case (int) R_MICROBLAZE_32:
|
| 1064 |
|
|
{
|
| 1065 |
|
|
/* r_symndx will be zero only for relocs against symbols
|
| 1066 |
|
|
from removed linkonce sections, or sections discarded by
|
| 1067 |
|
|
a linker script. */
|
| 1068 |
|
|
if (r_symndx == 0 || (input_section->flags & SEC_ALLOC) == 0)
|
| 1069 |
|
|
{
|
| 1070 |
|
|
relocation += addend;
|
| 1071 |
|
|
if (r_type == R_MICROBLAZE_32)
|
| 1072 |
|
|
bfd_put_32 (input_bfd, relocation, contents + offset);
|
| 1073 |
|
|
else
|
| 1074 |
|
|
{
|
| 1075 |
|
|
if (r_type == R_MICROBLAZE_64_PCREL)
|
| 1076 |
|
|
relocation -= (input_section->output_section->vma
|
| 1077 |
|
|
+ input_section->output_offset
|
| 1078 |
|
|
+ offset + INST_WORD_SIZE);
|
| 1079 |
|
|
bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
|
| 1080 |
|
|
contents + offset + 2);
|
| 1081 |
|
|
bfd_put_16 (input_bfd, relocation & 0xffff,
|
| 1082 |
|
|
contents + offset + 2 + INST_WORD_SIZE);
|
| 1083 |
|
|
}
|
| 1084 |
|
|
break;
|
| 1085 |
|
|
}
|
| 1086 |
|
|
|
| 1087 |
|
|
if ((info->shared
|
| 1088 |
|
|
&& (h == NULL
|
| 1089 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
| 1090 |
|
|
|| h->root.type != bfd_link_hash_undefweak)
|
| 1091 |
|
|
&& (!howto->pc_relative
|
| 1092 |
|
|
|| (h != NULL
|
| 1093 |
|
|
&& h->dynindx != -1
|
| 1094 |
|
|
&& (!info->symbolic
|
| 1095 |
|
|
|| !h->def_regular))))
|
| 1096 |
|
|
|| (!info->shared
|
| 1097 |
|
|
&& h != NULL
|
| 1098 |
|
|
&& h->dynindx != -1
|
| 1099 |
|
|
&& !h->non_got_ref
|
| 1100 |
|
|
&& ((h->def_dynamic
|
| 1101 |
|
|
&& !h->def_regular)
|
| 1102 |
|
|
|| h->root.type == bfd_link_hash_undefweak
|
| 1103 |
|
|
|| h->root.type == bfd_link_hash_undefined)))
|
| 1104 |
|
|
{
|
| 1105 |
|
|
Elf_Internal_Rela outrel;
|
| 1106 |
|
|
bfd_byte *loc;
|
| 1107 |
|
|
bfd_boolean skip, relocate = FALSE;
|
| 1108 |
|
|
|
| 1109 |
|
|
/* When generating a shared object, these relocations
|
| 1110 |
|
|
are copied into the output file to be resolved at run
|
| 1111 |
|
|
time. */
|
| 1112 |
|
|
|
| 1113 |
|
|
BFD_ASSERT (sreloc != NULL);
|
| 1114 |
|
|
|
| 1115 |
|
|
skip = FALSE;
|
| 1116 |
|
|
|
| 1117 |
|
|
outrel.r_offset =
|
| 1118 |
|
|
_bfd_elf_section_offset (output_bfd, info, input_section,
|
| 1119 |
|
|
rel->r_offset);
|
| 1120 |
|
|
if (outrel.r_offset == (bfd_vma) -1)
|
| 1121 |
|
|
skip = TRUE;
|
| 1122 |
|
|
else if (outrel.r_offset == (bfd_vma) -2)
|
| 1123 |
|
|
skip = TRUE, relocate = TRUE;
|
| 1124 |
|
|
outrel.r_offset += (input_section->output_section->vma
|
| 1125 |
|
|
+ input_section->output_offset);
|
| 1126 |
|
|
|
| 1127 |
|
|
if (skip)
|
| 1128 |
|
|
memset (&outrel, 0, sizeof outrel);
|
| 1129 |
|
|
/* h->dynindx may be -1 if the symbol was marked to
|
| 1130 |
|
|
become local. */
|
| 1131 |
|
|
else if (h != NULL
|
| 1132 |
|
|
&& ((! info->symbolic && h->dynindx != -1)
|
| 1133 |
|
|
|| !h->def_regular))
|
| 1134 |
|
|
{
|
| 1135 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 1136 |
|
|
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
| 1137 |
|
|
outrel.r_addend = addend;
|
| 1138 |
|
|
}
|
| 1139 |
|
|
else
|
| 1140 |
|
|
{
|
| 1141 |
|
|
if (r_type == R_MICROBLAZE_32)
|
| 1142 |
|
|
{
|
| 1143 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL);
|
| 1144 |
|
|
outrel.r_addend = relocation + addend;
|
| 1145 |
|
|
}
|
| 1146 |
|
|
else
|
| 1147 |
|
|
{
|
| 1148 |
|
|
BFD_FAIL ();
|
| 1149 |
|
|
(*_bfd_error_handler)
|
| 1150 |
|
|
(_("%B: probably compiled without -fPIC?"),
|
| 1151 |
|
|
input_bfd);
|
| 1152 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 1153 |
|
|
return FALSE;
|
| 1154 |
|
|
}
|
| 1155 |
|
|
}
|
| 1156 |
|
|
|
| 1157 |
|
|
loc = sreloc->contents;
|
| 1158 |
|
|
loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
|
| 1159 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
| 1160 |
|
|
break;
|
| 1161 |
|
|
}
|
| 1162 |
|
|
else
|
| 1163 |
|
|
{
|
| 1164 |
|
|
relocation += addend;
|
| 1165 |
|
|
if (r_type == R_MICROBLAZE_32)
|
| 1166 |
|
|
bfd_put_32 (input_bfd, relocation, contents + offset);
|
| 1167 |
|
|
else
|
| 1168 |
|
|
{
|
| 1169 |
|
|
if (r_type == R_MICROBLAZE_64_PCREL)
|
| 1170 |
|
|
relocation -= (input_section->output_section->vma
|
| 1171 |
|
|
+ input_section->output_offset
|
| 1172 |
|
|
+ offset + INST_WORD_SIZE);
|
| 1173 |
|
|
bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
|
| 1174 |
|
|
contents + offset + 2);
|
| 1175 |
|
|
bfd_put_16 (input_bfd, relocation & 0xffff,
|
| 1176 |
|
|
contents + offset + 2 + INST_WORD_SIZE);
|
| 1177 |
|
|
}
|
| 1178 |
|
|
break;
|
| 1179 |
|
|
}
|
| 1180 |
|
|
}
|
| 1181 |
|
|
|
| 1182 |
|
|
default :
|
| 1183 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 1184 |
|
|
contents, offset,
|
| 1185 |
|
|
relocation, addend);
|
| 1186 |
|
|
break;
|
| 1187 |
|
|
}
|
| 1188 |
|
|
}
|
| 1189 |
|
|
|
| 1190 |
|
|
check_reloc:
|
| 1191 |
|
|
|
| 1192 |
|
|
if (r != bfd_reloc_ok)
|
| 1193 |
|
|
{
|
| 1194 |
|
|
/* FIXME: This should be generic enough to go in a utility. */
|
| 1195 |
|
|
const char *name;
|
| 1196 |
|
|
|
| 1197 |
|
|
if (h != NULL)
|
| 1198 |
|
|
name = h->root.root.string;
|
| 1199 |
|
|
else
|
| 1200 |
|
|
{
|
| 1201 |
|
|
name = (bfd_elf_string_from_elf_section
|
| 1202 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
| 1203 |
|
|
if (name == NULL || *name == '\0')
|
| 1204 |
|
|
name = bfd_section_name (input_bfd, sec);
|
| 1205 |
|
|
}
|
| 1206 |
|
|
|
| 1207 |
|
|
if (errmsg != NULL)
|
| 1208 |
|
|
goto common_error;
|
| 1209 |
|
|
|
| 1210 |
|
|
switch (r)
|
| 1211 |
|
|
{
|
| 1212 |
|
|
case bfd_reloc_overflow:
|
| 1213 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
| 1214 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
| 1215 |
|
|
(bfd_vma) 0, input_bfd, input_section, offset)))
|
| 1216 |
|
|
return FALSE;
|
| 1217 |
|
|
break;
|
| 1218 |
|
|
|
| 1219 |
|
|
case bfd_reloc_undefined:
|
| 1220 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
| 1221 |
|
|
(info, name, input_bfd, input_section, offset, TRUE)))
|
| 1222 |
|
|
return FALSE;
|
| 1223 |
|
|
break;
|
| 1224 |
|
|
|
| 1225 |
|
|
case bfd_reloc_outofrange:
|
| 1226 |
|
|
errmsg = _("internal error: out of range error");
|
| 1227 |
|
|
goto common_error;
|
| 1228 |
|
|
|
| 1229 |
|
|
case bfd_reloc_notsupported:
|
| 1230 |
|
|
errmsg = _("internal error: unsupported relocation error");
|
| 1231 |
|
|
goto common_error;
|
| 1232 |
|
|
|
| 1233 |
|
|
case bfd_reloc_dangerous:
|
| 1234 |
|
|
errmsg = _("internal error: dangerous error");
|
| 1235 |
|
|
goto common_error;
|
| 1236 |
|
|
|
| 1237 |
|
|
default:
|
| 1238 |
|
|
errmsg = _("internal error: unknown error");
|
| 1239 |
|
|
/* Fall through. */
|
| 1240 |
|
|
common_error:
|
| 1241 |
|
|
if (!((*info->callbacks->warning)
|
| 1242 |
|
|
(info, errmsg, name, input_bfd, input_section, offset)))
|
| 1243 |
|
|
return FALSE;
|
| 1244 |
|
|
break;
|
| 1245 |
|
|
}
|
| 1246 |
|
|
}
|
| 1247 |
|
|
}
|
| 1248 |
|
|
|
| 1249 |
|
|
return ret;
|
| 1250 |
|
|
}
|
| 1251 |
|
|
|
| 1252 |
|
|
/* Calculate fixup value for reference. */
|
| 1253 |
|
|
|
| 1254 |
|
|
static int
|
| 1255 |
|
|
calc_fixup (bfd_vma addr, asection *sec)
|
| 1256 |
|
|
{
|
| 1257 |
|
|
int i, fixup = 0;
|
| 1258 |
|
|
|
| 1259 |
|
|
if (sec == NULL || sec->relax == NULL)
|
| 1260 |
|
|
return 0;
|
| 1261 |
|
|
|
| 1262 |
|
|
/* Look for addr in relax table, total fixup value. */
|
| 1263 |
|
|
for (i = 0; i < sec->relax_count; i++)
|
| 1264 |
|
|
{
|
| 1265 |
|
|
if (addr <= sec->relax[i].addr)
|
| 1266 |
|
|
break;
|
| 1267 |
|
|
fixup += sec->relax[i].size;
|
| 1268 |
|
|
}
|
| 1269 |
|
|
|
| 1270 |
|
|
return fixup;
|
| 1271 |
|
|
}
|
| 1272 |
|
|
|
| 1273 |
|
|
static bfd_boolean
|
| 1274 |
|
|
microblaze_elf_relax_section (bfd *abfd,
|
| 1275 |
|
|
asection *sec,
|
| 1276 |
|
|
struct bfd_link_info *link_info,
|
| 1277 |
|
|
bfd_boolean *again)
|
| 1278 |
|
|
{
|
| 1279 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1280 |
|
|
Elf_Internal_Rela *internal_relocs;
|
| 1281 |
|
|
Elf_Internal_Rela *free_relocs = NULL;
|
| 1282 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 1283 |
|
|
bfd_byte *contents = NULL;
|
| 1284 |
|
|
bfd_byte *free_contents = NULL;
|
| 1285 |
|
|
int rel_count;
|
| 1286 |
|
|
unsigned int shndx;
|
| 1287 |
|
|
int i, index;
|
| 1288 |
|
|
asection *o;
|
| 1289 |
|
|
struct elf_link_hash_entry *sym_hash;
|
| 1290 |
|
|
Elf_Internal_Sym *isymbuf, *isymend;
|
| 1291 |
|
|
Elf_Internal_Sym *isym;
|
| 1292 |
|
|
int symcount;
|
| 1293 |
|
|
int offset;
|
| 1294 |
|
|
bfd_vma src, dest;
|
| 1295 |
|
|
|
| 1296 |
|
|
/* We only do this once per section. We may be able to delete some code
|
| 1297 |
|
|
by running multiple passes, but it is not worth it. */
|
| 1298 |
|
|
*again = FALSE;
|
| 1299 |
|
|
|
| 1300 |
|
|
/* Only do this for a text section. */
|
| 1301 |
|
|
if (link_info->relocatable
|
| 1302 |
|
|
|| (sec->flags & SEC_RELOC) == 0
|
| 1303 |
|
|
|| (sec->reloc_count == 0))
|
| 1304 |
|
|
return TRUE;
|
| 1305 |
|
|
|
| 1306 |
|
|
BFD_ASSERT ((sec->size > 0) || (sec->rawsize > 0));
|
| 1307 |
|
|
|
| 1308 |
|
|
/* If this is the first time we have been called for this section,
|
| 1309 |
|
|
initialize the cooked size. */
|
| 1310 |
|
|
if (sec->size == 0)
|
| 1311 |
|
|
sec->size = sec->rawsize;
|
| 1312 |
|
|
|
| 1313 |
|
|
/* Get symbols for this section. */
|
| 1314 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 1315 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 1316 |
|
|
symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
|
| 1317 |
|
|
if (isymbuf == NULL)
|
| 1318 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, symcount,
|
| 1319 |
|
|
0, NULL, NULL, NULL);
|
| 1320 |
|
|
BFD_ASSERT (isymbuf != NULL);
|
| 1321 |
|
|
|
| 1322 |
|
|
internal_relocs = _bfd_elf_link_read_relocs
|
| 1323 |
|
|
(abfd, sec, NULL, NULL, link_info->keep_memory);
|
| 1324 |
|
|
if (internal_relocs == NULL)
|
| 1325 |
|
|
goto error_return;
|
| 1326 |
|
|
if (! link_info->keep_memory)
|
| 1327 |
|
|
free_relocs = internal_relocs;
|
| 1328 |
|
|
|
| 1329 |
|
|
sec->relax = (struct relax_table *) bfd_malloc ((sec->reloc_count + 1)
|
| 1330 |
|
|
* sizeof (struct relax_table));
|
| 1331 |
|
|
if (sec->relax == NULL)
|
| 1332 |
|
|
goto error_return;
|
| 1333 |
|
|
sec->relax_count = 0;
|
| 1334 |
|
|
|
| 1335 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
| 1336 |
|
|
rel_count = 0;
|
| 1337 |
|
|
for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
|
| 1338 |
|
|
{
|
| 1339 |
|
|
bfd_vma symval;
|
| 1340 |
|
|
if ((ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64_PCREL)
|
| 1341 |
|
|
&& (ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64 ))
|
| 1342 |
|
|
continue; /* Can't delete this reloc. */
|
| 1343 |
|
|
|
| 1344 |
|
|
/* Get the section contents. */
|
| 1345 |
|
|
if (contents == NULL)
|
| 1346 |
|
|
{
|
| 1347 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
| 1348 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 1349 |
|
|
else
|
| 1350 |
|
|
{
|
| 1351 |
|
|
contents = (bfd_byte *) bfd_malloc (sec->size);
|
| 1352 |
|
|
if (contents == NULL)
|
| 1353 |
|
|
goto error_return;
|
| 1354 |
|
|
free_contents = contents;
|
| 1355 |
|
|
|
| 1356 |
|
|
if (!bfd_get_section_contents (abfd, sec, contents,
|
| 1357 |
|
|
(file_ptr) 0, sec->size))
|
| 1358 |
|
|
goto error_return;
|
| 1359 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 1360 |
|
|
}
|
| 1361 |
|
|
}
|
| 1362 |
|
|
|
| 1363 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
| 1364 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
| 1365 |
|
|
{
|
| 1366 |
|
|
/* A local symbol. */
|
| 1367 |
|
|
Elf_Internal_Sym *isym;
|
| 1368 |
|
|
asection *sym_sec;
|
| 1369 |
|
|
|
| 1370 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
| 1371 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 1372 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 1373 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 1374 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 1375 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 1376 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 1377 |
|
|
else
|
| 1378 |
|
|
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 1379 |
|
|
|
| 1380 |
|
|
symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel);
|
| 1381 |
|
|
}
|
| 1382 |
|
|
else
|
| 1383 |
|
|
{
|
| 1384 |
|
|
unsigned long indx;
|
| 1385 |
|
|
struct elf_link_hash_entry *h;
|
| 1386 |
|
|
|
| 1387 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
| 1388 |
|
|
h = elf_sym_hashes (abfd)[indx];
|
| 1389 |
|
|
BFD_ASSERT (h != NULL);
|
| 1390 |
|
|
|
| 1391 |
|
|
if (h->root.type != bfd_link_hash_defined
|
| 1392 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 1393 |
|
|
/* This appears to be a reference to an undefined
|
| 1394 |
|
|
symbol. Just ignore it--it will be caught by the
|
| 1395 |
|
|
regular reloc processing. */
|
| 1396 |
|
|
continue;
|
| 1397 |
|
|
|
| 1398 |
|
|
symval = (h->root.u.def.value
|
| 1399 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 1400 |
|
|
+ h->root.u.def.section->output_offset);
|
| 1401 |
|
|
}
|
| 1402 |
|
|
|
| 1403 |
|
|
/* If this is a PC-relative reloc, subtract the instr offset from
|
| 1404 |
|
|
the symbol value. */
|
| 1405 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MICROBLAZE_64_PCREL)
|
| 1406 |
|
|
{
|
| 1407 |
|
|
symval = symval + irel->r_addend
|
| 1408 |
|
|
- (irel->r_offset
|
| 1409 |
|
|
+ sec->output_section->vma
|
| 1410 |
|
|
+ sec->output_offset);
|
| 1411 |
|
|
}
|
| 1412 |
|
|
else
|
| 1413 |
|
|
symval += irel->r_addend;
|
| 1414 |
|
|
|
| 1415 |
|
|
if ((symval & 0xffff8000) == 0
|
| 1416 |
|
|
|| (symval & 0xffff8000) == 0xffff8000)
|
| 1417 |
|
|
{
|
| 1418 |
|
|
/* We can delete this instruction. */
|
| 1419 |
|
|
sec->relax[sec->relax_count].addr = irel->r_offset;
|
| 1420 |
|
|
sec->relax[sec->relax_count].size = INST_WORD_SIZE;
|
| 1421 |
|
|
sec->relax_count++;
|
| 1422 |
|
|
|
| 1423 |
|
|
/* Rewrite relocation type. */
|
| 1424 |
|
|
switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
|
| 1425 |
|
|
{
|
| 1426 |
|
|
case R_MICROBLAZE_64_PCREL:
|
| 1427 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 1428 |
|
|
(int) R_MICROBLAZE_32_PCREL_LO);
|
| 1429 |
|
|
break;
|
| 1430 |
|
|
case R_MICROBLAZE_64:
|
| 1431 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 1432 |
|
|
(int) R_MICROBLAZE_32_LO);
|
| 1433 |
|
|
break;
|
| 1434 |
|
|
default:
|
| 1435 |
|
|
/* Cannot happen. */
|
| 1436 |
|
|
BFD_ASSERT (FALSE);
|
| 1437 |
|
|
}
|
| 1438 |
|
|
}
|
| 1439 |
|
|
} /* Loop through all relocations. */
|
| 1440 |
|
|
|
| 1441 |
|
|
/* Loop through the relocs again, and see if anything needs to change. */
|
| 1442 |
|
|
if (sec->relax_count > 0)
|
| 1443 |
|
|
{
|
| 1444 |
|
|
shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
| 1445 |
|
|
rel_count = 0;
|
| 1446 |
|
|
sec->relax[sec->relax_count].addr = sec->size;
|
| 1447 |
|
|
|
| 1448 |
|
|
for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
|
| 1449 |
|
|
{
|
| 1450 |
|
|
bfd_vma nraddr;
|
| 1451 |
|
|
|
| 1452 |
|
|
/* Get the new reloc address. */
|
| 1453 |
|
|
nraddr = irel->r_offset - calc_fixup (irel->r_offset, sec);
|
| 1454 |
|
|
switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
|
| 1455 |
|
|
{
|
| 1456 |
|
|
default:
|
| 1457 |
|
|
break;
|
| 1458 |
|
|
case R_MICROBLAZE_64_PCREL:
|
| 1459 |
|
|
break;
|
| 1460 |
|
|
case R_MICROBLAZE_64:
|
| 1461 |
|
|
case R_MICROBLAZE_32_LO:
|
| 1462 |
|
|
/* If this reloc is against a symbol defined in this
|
| 1463 |
|
|
section, we must check the addend to see it will put the value in
|
| 1464 |
|
|
range to be adjusted, and hence must be changed. */
|
| 1465 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
| 1466 |
|
|
{
|
| 1467 |
|
|
Elf_Internal_Sym *isym;
|
| 1468 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
| 1469 |
|
|
/* Only handle relocs against .text. */
|
| 1470 |
|
|
if (isym->st_shndx == shndx
|
| 1471 |
|
|
&& ELF32_ST_TYPE (isym->st_info) == STT_SECTION)
|
| 1472 |
|
|
irel->r_addend -= calc_fixup (irel->r_addend, sec);
|
| 1473 |
|
|
}
|
| 1474 |
|
|
break;
|
| 1475 |
|
|
case R_MICROBLAZE_NONE:
|
| 1476 |
|
|
{
|
| 1477 |
|
|
/* This was a PC-relative instruction that was
|
| 1478 |
|
|
completely resolved. */
|
| 1479 |
|
|
int sfix, efix;
|
| 1480 |
|
|
bfd_vma target_address;
|
| 1481 |
|
|
target_address = irel->r_addend + irel->r_offset;
|
| 1482 |
|
|
sfix = calc_fixup (irel->r_offset, sec);
|
| 1483 |
|
|
efix = calc_fixup (target_address, sec);
|
| 1484 |
|
|
irel->r_addend -= (efix - sfix);
|
| 1485 |
|
|
/* Should use HOWTO. */
|
| 1486 |
|
|
bfd_put_16 (abfd, irel->r_addend, contents + irel->r_offset + 2);
|
| 1487 |
|
|
}
|
| 1488 |
|
|
break;
|
| 1489 |
|
|
case R_MICROBLAZE_64_NONE:
|
| 1490 |
|
|
{
|
| 1491 |
|
|
/* This was a PC-relative 64-bit instruction that was
|
| 1492 |
|
|
completely resolved. */
|
| 1493 |
|
|
int sfix, efix;
|
| 1494 |
|
|
bfd_vma target_address;
|
| 1495 |
|
|
target_address = irel->r_addend + irel->r_offset + INST_WORD_SIZE;
|
| 1496 |
|
|
sfix = calc_fixup (irel->r_offset + INST_WORD_SIZE, sec);
|
| 1497 |
|
|
efix = calc_fixup (target_address, sec);
|
| 1498 |
|
|
irel->r_addend -= (efix - sfix);
|
| 1499 |
|
|
bfd_put_16 (abfd, irel->r_addend, contents + irel->r_offset
|
| 1500 |
|
|
+ INST_WORD_SIZE + 2);
|
| 1501 |
|
|
}
|
| 1502 |
|
|
break;
|
| 1503 |
|
|
}
|
| 1504 |
|
|
irel->r_offset = nraddr;
|
| 1505 |
|
|
} /* Change all relocs in this section. */
|
| 1506 |
|
|
|
| 1507 |
|
|
/* Look through all other sections. */
|
| 1508 |
|
|
for (o = abfd->sections; o != NULL; o = o->next)
|
| 1509 |
|
|
{
|
| 1510 |
|
|
Elf_Internal_Rela *internal_relocs;
|
| 1511 |
|
|
Elf_Internal_Rela *irelscan, *irelscanend;
|
| 1512 |
|
|
bfd_byte *ocontents;
|
| 1513 |
|
|
|
| 1514 |
|
|
if (o == sec
|
| 1515 |
|
|
|| (o->flags & SEC_RELOC) == 0
|
| 1516 |
|
|
|| o->reloc_count == 0)
|
| 1517 |
|
|
continue;
|
| 1518 |
|
|
|
| 1519 |
|
|
/* We always cache the relocs. Perhaps, if info->keep_memory is
|
| 1520 |
|
|
FALSE, we should free them, if we are permitted to. */
|
| 1521 |
|
|
|
| 1522 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, TRUE);
|
| 1523 |
|
|
if (internal_relocs == NULL)
|
| 1524 |
|
|
goto error_return;
|
| 1525 |
|
|
|
| 1526 |
|
|
ocontents = NULL;
|
| 1527 |
|
|
irelscanend = internal_relocs + o->reloc_count;
|
| 1528 |
|
|
for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
|
| 1529 |
|
|
{
|
| 1530 |
|
|
if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32)
|
| 1531 |
|
|
{
|
| 1532 |
|
|
isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
|
| 1533 |
|
|
|
| 1534 |
|
|
/* Look at the reloc only if the value has been resolved. */
|
| 1535 |
|
|
if (isym->st_shndx == shndx
|
| 1536 |
|
|
&& (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
|
| 1537 |
|
|
{
|
| 1538 |
|
|
if (ocontents == NULL)
|
| 1539 |
|
|
{
|
| 1540 |
|
|
if (elf_section_data (o)->this_hdr.contents != NULL)
|
| 1541 |
|
|
ocontents = elf_section_data (o)->this_hdr.contents;
|
| 1542 |
|
|
else
|
| 1543 |
|
|
{
|
| 1544 |
|
|
/* We always cache the section contents.
|
| 1545 |
|
|
Perhaps, if info->keep_memory is FALSE, we
|
| 1546 |
|
|
should free them, if we are permitted to. */
|
| 1547 |
|
|
if (o->rawsize == 0)
|
| 1548 |
|
|
o->rawsize = o->size;
|
| 1549 |
|
|
ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
|
| 1550 |
|
|
if (ocontents == NULL)
|
| 1551 |
|
|
goto error_return;
|
| 1552 |
|
|
if (!bfd_get_section_contents (abfd, o, ocontents,
|
| 1553 |
|
|
(file_ptr) 0,
|
| 1554 |
|
|
o->rawsize))
|
| 1555 |
|
|
goto error_return;
|
| 1556 |
|
|
elf_section_data (o)->this_hdr.contents = ocontents;
|
| 1557 |
|
|
}
|
| 1558 |
|
|
|
| 1559 |
|
|
}
|
| 1560 |
|
|
irelscan->r_addend -= calc_fixup (irelscan->r_addend, sec);
|
| 1561 |
|
|
}
|
| 1562 |
|
|
else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_SYM_OP_SYM)
|
| 1563 |
|
|
{
|
| 1564 |
|
|
isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
|
| 1565 |
|
|
|
| 1566 |
|
|
/* Look at the reloc only if the value has been resolved. */
|
| 1567 |
|
|
if (ocontents == NULL)
|
| 1568 |
|
|
{
|
| 1569 |
|
|
if (elf_section_data (o)->this_hdr.contents != NULL)
|
| 1570 |
|
|
ocontents = elf_section_data (o)->this_hdr.contents;
|
| 1571 |
|
|
else
|
| 1572 |
|
|
{
|
| 1573 |
|
|
/* We always cache the section contents.
|
| 1574 |
|
|
Perhaps, if info->keep_memory is FALSE, we
|
| 1575 |
|
|
should free them, if we are permitted to. */
|
| 1576 |
|
|
|
| 1577 |
|
|
if (o->rawsize == 0)
|
| 1578 |
|
|
o->rawsize = o->size;
|
| 1579 |
|
|
ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
|
| 1580 |
|
|
if (ocontents == NULL)
|
| 1581 |
|
|
goto error_return;
|
| 1582 |
|
|
if (!bfd_get_section_contents (abfd, o, ocontents,
|
| 1583 |
|
|
(file_ptr) 0,
|
| 1584 |
|
|
o->rawsize))
|
| 1585 |
|
|
goto error_return;
|
| 1586 |
|
|
elf_section_data (o)->this_hdr.contents = ocontents;
|
| 1587 |
|
|
}
|
| 1588 |
|
|
}
|
| 1589 |
|
|
irelscan->r_addend -= calc_fixup (irel->r_addend
|
| 1590 |
|
|
+ isym->st_value,
|
| 1591 |
|
|
sec);
|
| 1592 |
|
|
}
|
| 1593 |
|
|
}
|
| 1594 |
|
|
else if ((ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_PCREL_LO)
|
| 1595 |
|
|
|| (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_LO))
|
| 1596 |
|
|
{
|
| 1597 |
|
|
isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
|
| 1598 |
|
|
|
| 1599 |
|
|
/* Look at the reloc only if the value has been resolved. */
|
| 1600 |
|
|
if (isym->st_shndx == shndx
|
| 1601 |
|
|
&& (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
|
| 1602 |
|
|
{
|
| 1603 |
|
|
bfd_vma immediate;
|
| 1604 |
|
|
bfd_vma target_address;
|
| 1605 |
|
|
|
| 1606 |
|
|
if (ocontents == NULL)
|
| 1607 |
|
|
{
|
| 1608 |
|
|
if (elf_section_data (o)->this_hdr.contents != NULL)
|
| 1609 |
|
|
ocontents = elf_section_data (o)->this_hdr.contents;
|
| 1610 |
|
|
else
|
| 1611 |
|
|
{
|
| 1612 |
|
|
/* We always cache the section contents.
|
| 1613 |
|
|
Perhaps, if info->keep_memory is FALSE, we
|
| 1614 |
|
|
should free them, if we are permitted to. */
|
| 1615 |
|
|
if (o->rawsize == 0)
|
| 1616 |
|
|
o->rawsize = o->size;
|
| 1617 |
|
|
ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
|
| 1618 |
|
|
if (ocontents == NULL)
|
| 1619 |
|
|
goto error_return;
|
| 1620 |
|
|
if (!bfd_get_section_contents (abfd, o, ocontents,
|
| 1621 |
|
|
(file_ptr) 0,
|
| 1622 |
|
|
o->rawsize))
|
| 1623 |
|
|
goto error_return;
|
| 1624 |
|
|
elf_section_data (o)->this_hdr.contents = ocontents;
|
| 1625 |
|
|
}
|
| 1626 |
|
|
}
|
| 1627 |
|
|
|
| 1628 |
|
|
immediate = (unsigned short) bfd_get_16 (abfd, ocontents +
|
| 1629 |
|
|
irelscan->r_offset + 2);
|
| 1630 |
|
|
target_address = immediate;
|
| 1631 |
|
|
offset = calc_fixup (target_address, sec);
|
| 1632 |
|
|
immediate -= offset;
|
| 1633 |
|
|
irelscan->r_addend -= offset;
|
| 1634 |
|
|
bfd_put_16 (abfd, immediate, ocontents + irelscan->r_offset + 2);
|
| 1635 |
|
|
}
|
| 1636 |
|
|
}
|
| 1637 |
|
|
|
| 1638 |
|
|
if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64)
|
| 1639 |
|
|
{
|
| 1640 |
|
|
isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
|
| 1641 |
|
|
|
| 1642 |
|
|
/* Look at the reloc only if the value has been resolved. */
|
| 1643 |
|
|
if (isym->st_shndx == shndx
|
| 1644 |
|
|
&& (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
|
| 1645 |
|
|
{
|
| 1646 |
|
|
bfd_vma immediate;
|
| 1647 |
|
|
|
| 1648 |
|
|
if (ocontents == NULL)
|
| 1649 |
|
|
{
|
| 1650 |
|
|
if (elf_section_data (o)->this_hdr.contents != NULL)
|
| 1651 |
|
|
ocontents = elf_section_data (o)->this_hdr.contents;
|
| 1652 |
|
|
else
|
| 1653 |
|
|
{
|
| 1654 |
|
|
/* We always cache the section contents.
|
| 1655 |
|
|
Perhaps, if info->keep_memory is FALSE, we
|
| 1656 |
|
|
should free them, if we are permitted to. */
|
| 1657 |
|
|
|
| 1658 |
|
|
if (o->rawsize == 0)
|
| 1659 |
|
|
o->rawsize = o->size;
|
| 1660 |
|
|
ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
|
| 1661 |
|
|
if (ocontents == NULL)
|
| 1662 |
|
|
goto error_return;
|
| 1663 |
|
|
if (!bfd_get_section_contents (abfd, o, ocontents,
|
| 1664 |
|
|
(file_ptr) 0,
|
| 1665 |
|
|
o->rawsize))
|
| 1666 |
|
|
goto error_return;
|
| 1667 |
|
|
elf_section_data (o)->this_hdr.contents = ocontents;
|
| 1668 |
|
|
}
|
| 1669 |
|
|
}
|
| 1670 |
|
|
immediate = (unsigned short) (bfd_get_16 (abfd, ocontents
|
| 1671 |
|
|
+ irelscan->r_offset
|
| 1672 |
|
|
+ 2) << 16)
|
| 1673 |
|
|
& 0xffff0000;
|
| 1674 |
|
|
immediate += (unsigned short) (bfd_get_16 (abfd, ocontents
|
| 1675 |
|
|
+ irelscan->r_offset
|
| 1676 |
|
|
+ INST_WORD_SIZE + 2))
|
| 1677 |
|
|
& 0x0000ffff;
|
| 1678 |
|
|
|
| 1679 |
|
|
offset = calc_fixup (irelscan->r_addend, sec);
|
| 1680 |
|
|
immediate -= offset;
|
| 1681 |
|
|
irelscan->r_addend -= offset;
|
| 1682 |
|
|
}
|
| 1683 |
|
|
}
|
| 1684 |
|
|
else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64_PCREL)
|
| 1685 |
|
|
{
|
| 1686 |
|
|
isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
|
| 1687 |
|
|
|
| 1688 |
|
|
/* Look at the reloc only if the value has been resolved. */
|
| 1689 |
|
|
if (isym->st_shndx == shndx
|
| 1690 |
|
|
&& (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
|
| 1691 |
|
|
{
|
| 1692 |
|
|
bfd_vma immediate;
|
| 1693 |
|
|
bfd_vma target_address;
|
| 1694 |
|
|
|
| 1695 |
|
|
if (ocontents == NULL)
|
| 1696 |
|
|
{
|
| 1697 |
|
|
if (elf_section_data (o)->this_hdr.contents != NULL)
|
| 1698 |
|
|
ocontents = elf_section_data (o)->this_hdr.contents;
|
| 1699 |
|
|
else
|
| 1700 |
|
|
{
|
| 1701 |
|
|
/* We always cache the section contents.
|
| 1702 |
|
|
Perhaps, if info->keep_memory is FALSE, we
|
| 1703 |
|
|
should free them, if we are permitted to. */
|
| 1704 |
|
|
if (o->rawsize == 0)
|
| 1705 |
|
|
o->rawsize = o->size;
|
| 1706 |
|
|
ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
|
| 1707 |
|
|
if (ocontents == NULL)
|
| 1708 |
|
|
goto error_return;
|
| 1709 |
|
|
if (!bfd_get_section_contents (abfd, o, ocontents,
|
| 1710 |
|
|
(file_ptr) 0,
|
| 1711 |
|
|
o->rawsize))
|
| 1712 |
|
|
goto error_return;
|
| 1713 |
|
|
elf_section_data (o)->this_hdr.contents = ocontents;
|
| 1714 |
|
|
}
|
| 1715 |
|
|
}
|
| 1716 |
|
|
|
| 1717 |
|
|
immediate = (unsigned short)
|
| 1718 |
|
|
(bfd_get_16 (abfd, ocontents + irelscan->r_offset + 2) << 16)
|
| 1719 |
|
|
& 0xffff0000;
|
| 1720 |
|
|
immediate += (unsigned short)
|
| 1721 |
|
|
(bfd_get_16 (abfd, ocontents + irelscan->r_offset
|
| 1722 |
|
|
+ INST_WORD_SIZE + 2))
|
| 1723 |
|
|
& 0x0000ffff;
|
| 1724 |
|
|
target_address = immediate;
|
| 1725 |
|
|
offset = calc_fixup (target_address, sec);
|
| 1726 |
|
|
immediate -= offset;
|
| 1727 |
|
|
irelscan->r_addend -= offset;
|
| 1728 |
|
|
bfd_put_16 (abfd, ((immediate >> 16) & 0x0000ffff),
|
| 1729 |
|
|
ocontents + irelscan->r_offset + 2);
|
| 1730 |
|
|
bfd_put_16 (abfd, (immediate & 0x0000ffff),
|
| 1731 |
|
|
ocontents + irelscan->r_offset + INST_WORD_SIZE + 2);
|
| 1732 |
|
|
}
|
| 1733 |
|
|
}
|
| 1734 |
|
|
}
|
| 1735 |
|
|
}
|
| 1736 |
|
|
|
| 1737 |
|
|
/* Adjust the local symbols defined in this section. */
|
| 1738 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
| 1739 |
|
|
for (isym = isymbuf; isym < isymend; isym++)
|
| 1740 |
|
|
{
|
| 1741 |
|
|
if (isym->st_shndx == shndx)
|
| 1742 |
|
|
isym->st_value =- calc_fixup (isym->st_value, sec);
|
| 1743 |
|
|
}
|
| 1744 |
|
|
|
| 1745 |
|
|
/* Now adjust the global symbols defined in this section. */
|
| 1746 |
|
|
isym = isymbuf + symtab_hdr->sh_info;
|
| 1747 |
|
|
isymend = isymbuf + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
|
| 1748 |
|
|
for (index = 0; isym < isymend; isym++, index++)
|
| 1749 |
|
|
{
|
| 1750 |
|
|
sym_hash = elf_sym_hashes (abfd)[index];
|
| 1751 |
|
|
if (isym->st_shndx == shndx
|
| 1752 |
|
|
&& (sym_hash->root.type == bfd_link_hash_defined
|
| 1753 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
| 1754 |
|
|
&& sym_hash->root.u.def.section == sec)
|
| 1755 |
|
|
{
|
| 1756 |
|
|
sym_hash->root.u.def.value -= calc_fixup (sym_hash->root.u.def.value,
|
| 1757 |
|
|
sec);
|
| 1758 |
|
|
}
|
| 1759 |
|
|
}
|
| 1760 |
|
|
|
| 1761 |
|
|
/* Physically move the code and change the cooked size. */
|
| 1762 |
|
|
dest = sec->relax[0].addr;
|
| 1763 |
|
|
for (i = 0; i < sec->relax_count; i++)
|
| 1764 |
|
|
{
|
| 1765 |
|
|
int len;
|
| 1766 |
|
|
src = sec->relax[i].addr + sec->relax[i].size;
|
| 1767 |
|
|
len = sec->relax[i+1].addr - sec->relax[i].addr - sec->relax[i].size;
|
| 1768 |
|
|
|
| 1769 |
|
|
memmove (contents + dest, contents + src, len);
|
| 1770 |
|
|
sec->size -= sec->relax[i].size;
|
| 1771 |
|
|
dest += len;
|
| 1772 |
|
|
}
|
| 1773 |
|
|
|
| 1774 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 1775 |
|
|
free_relocs = NULL;
|
| 1776 |
|
|
|
| 1777 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 1778 |
|
|
free_contents = NULL;
|
| 1779 |
|
|
|
| 1780 |
|
|
symtab_hdr->contents = (bfd_byte *) isymbuf;
|
| 1781 |
|
|
}
|
| 1782 |
|
|
|
| 1783 |
|
|
if (free_relocs != NULL)
|
| 1784 |
|
|
{
|
| 1785 |
|
|
free (free_relocs);
|
| 1786 |
|
|
free_relocs = NULL;
|
| 1787 |
|
|
}
|
| 1788 |
|
|
|
| 1789 |
|
|
if (free_contents != NULL)
|
| 1790 |
|
|
{
|
| 1791 |
|
|
if (!link_info->keep_memory)
|
| 1792 |
|
|
free (free_contents);
|
| 1793 |
|
|
else
|
| 1794 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
| 1795 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 1796 |
|
|
free_contents = NULL;
|
| 1797 |
|
|
}
|
| 1798 |
|
|
|
| 1799 |
|
|
if (sec->relax_count == 0)
|
| 1800 |
|
|
{
|
| 1801 |
|
|
free (sec->relax);
|
| 1802 |
|
|
sec->relax = NULL;
|
| 1803 |
|
|
}
|
| 1804 |
|
|
return TRUE;
|
| 1805 |
|
|
|
| 1806 |
|
|
error_return:
|
| 1807 |
|
|
if (free_relocs != NULL)
|
| 1808 |
|
|
free (free_relocs);
|
| 1809 |
|
|
if (free_contents != NULL)
|
| 1810 |
|
|
free (free_contents);
|
| 1811 |
|
|
if (sec->relax != NULL)
|
| 1812 |
|
|
{
|
| 1813 |
|
|
free (sec->relax);
|
| 1814 |
|
|
sec->relax = NULL;
|
| 1815 |
|
|
sec->relax_count = 0;
|
| 1816 |
|
|
}
|
| 1817 |
|
|
return FALSE;
|
| 1818 |
|
|
}
|
| 1819 |
|
|
|
| 1820 |
|
|
/* Return the section that should be marked against GC for a given
|
| 1821 |
|
|
relocation. */
|
| 1822 |
|
|
|
| 1823 |
|
|
static asection *
|
| 1824 |
|
|
microblaze_elf_gc_mark_hook (asection *sec,
|
| 1825 |
|
|
struct bfd_link_info * info ATTRIBUTE_UNUSED,
|
| 1826 |
|
|
Elf_Internal_Rela * rel,
|
| 1827 |
|
|
struct elf_link_hash_entry * h,
|
| 1828 |
|
|
Elf_Internal_Sym * sym)
|
| 1829 |
|
|
{
|
| 1830 |
|
|
if (h != NULL)
|
| 1831 |
|
|
{
|
| 1832 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 1833 |
|
|
{
|
| 1834 |
|
|
case R_MICROBLAZE_GNU_VTINHERIT:
|
| 1835 |
|
|
case R_MICROBLAZE_GNU_VTENTRY:
|
| 1836 |
|
|
break;
|
| 1837 |
|
|
|
| 1838 |
|
|
default:
|
| 1839 |
|
|
switch (h->root.type)
|
| 1840 |
|
|
{
|
| 1841 |
|
|
case bfd_link_hash_defined:
|
| 1842 |
|
|
case bfd_link_hash_defweak:
|
| 1843 |
|
|
return h->root.u.def.section;
|
| 1844 |
|
|
|
| 1845 |
|
|
case bfd_link_hash_common:
|
| 1846 |
|
|
return h->root.u.c.p->section;
|
| 1847 |
|
|
|
| 1848 |
|
|
default:
|
| 1849 |
|
|
break;
|
| 1850 |
|
|
}
|
| 1851 |
|
|
}
|
| 1852 |
|
|
}
|
| 1853 |
|
|
else
|
| 1854 |
|
|
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
| 1855 |
|
|
|
| 1856 |
|
|
return NULL;
|
| 1857 |
|
|
}
|
| 1858 |
|
|
|
| 1859 |
|
|
/* Update the got entry reference counts for the section being removed. */
|
| 1860 |
|
|
|
| 1861 |
|
|
static bfd_boolean
|
| 1862 |
|
|
microblaze_elf_gc_sweep_hook (bfd * abfd ATTRIBUTE_UNUSED,
|
| 1863 |
|
|
struct bfd_link_info * info ATTRIBUTE_UNUSED,
|
| 1864 |
|
|
asection * sec ATTRIBUTE_UNUSED,
|
| 1865 |
|
|
const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)
|
| 1866 |
|
|
{
|
| 1867 |
|
|
return TRUE;
|
| 1868 |
|
|
}
|
| 1869 |
|
|
|
| 1870 |
|
|
/* PIC support. */
|
| 1871 |
|
|
|
| 1872 |
|
|
#define PLT_ENTRY_SIZE 16
|
| 1873 |
|
|
|
| 1874 |
|
|
#define PLT_ENTRY_WORD_0 0xb0000000 /* "imm 0". */
|
| 1875 |
|
|
#define PLT_ENTRY_WORD_1 0xe9940000 /* "lwi r12,r20,0" - relocated to lwi r12,r20,func@GOT. */
|
| 1876 |
|
|
#define PLT_ENTRY_WORD_1_NOPIC 0xe9800000 /* "lwi r12,r0,0" - non-PIC object. */
|
| 1877 |
|
|
#define PLT_ENTRY_WORD_2 0x98186000 /* "brad r12". */
|
| 1878 |
|
|
#define PLT_ENTRY_WORD_3 0x80000000 /* "nop". */
|
| 1879 |
|
|
|
| 1880 |
|
|
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
|
| 1881 |
|
|
shortcuts to them in our hash table. */
|
| 1882 |
|
|
|
| 1883 |
|
|
static bfd_boolean
|
| 1884 |
|
|
create_got_section (bfd *dynobj, struct bfd_link_info *info)
|
| 1885 |
|
|
{
|
| 1886 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 1887 |
|
|
|
| 1888 |
|
|
if (! _bfd_elf_create_got_section (dynobj, info))
|
| 1889 |
|
|
return FALSE;
|
| 1890 |
|
|
htab = elf32_mb_hash_table (info);
|
| 1891 |
|
|
htab->sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 1892 |
|
|
htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 1893 |
|
|
if (!htab->sgot || !htab->sgotplt)
|
| 1894 |
|
|
return FALSE;
|
| 1895 |
|
|
|
| 1896 |
|
|
htab->srelgot = bfd_make_section (dynobj, ".rela.got");
|
| 1897 |
|
|
if (htab->srelgot == NULL
|
| 1898 |
|
|
|| ! bfd_set_section_flags (dynobj, htab->srelgot, SEC_ALLOC
|
| 1899 |
|
|
| SEC_LOAD
|
| 1900 |
|
|
| SEC_HAS_CONTENTS
|
| 1901 |
|
|
| SEC_IN_MEMORY
|
| 1902 |
|
|
| SEC_LINKER_CREATED
|
| 1903 |
|
|
| SEC_READONLY)
|
| 1904 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
|
| 1905 |
|
|
return FALSE;
|
| 1906 |
|
|
return TRUE;
|
| 1907 |
|
|
}
|
| 1908 |
|
|
|
| 1909 |
|
|
/* Look through the relocs for a section during the first phase. */
|
| 1910 |
|
|
|
| 1911 |
|
|
static bfd_boolean
|
| 1912 |
|
|
microblaze_elf_check_relocs (bfd * abfd,
|
| 1913 |
|
|
struct bfd_link_info * info,
|
| 1914 |
|
|
asection * sec,
|
| 1915 |
|
|
const Elf_Internal_Rela * relocs)
|
| 1916 |
|
|
{
|
| 1917 |
|
|
Elf_Internal_Shdr * symtab_hdr;
|
| 1918 |
|
|
struct elf_link_hash_entry ** sym_hashes;
|
| 1919 |
|
|
struct elf_link_hash_entry ** sym_hashes_end;
|
| 1920 |
|
|
const Elf_Internal_Rela * rel;
|
| 1921 |
|
|
const Elf_Internal_Rela * rel_end;
|
| 1922 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 1923 |
|
|
bfd_vma *local_got_offsets;
|
| 1924 |
|
|
asection *sreloc = NULL;
|
| 1925 |
|
|
|
| 1926 |
|
|
if (info->relocatable)
|
| 1927 |
|
|
return TRUE;
|
| 1928 |
|
|
|
| 1929 |
|
|
htab = elf32_mb_hash_table (info);
|
| 1930 |
|
|
local_got_offsets = elf_local_got_offsets (abfd);
|
| 1931 |
|
|
symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
|
| 1932 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 1933 |
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
|
| 1934 |
|
|
if (!elf_bad_symtab (abfd))
|
| 1935 |
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
| 1936 |
|
|
|
| 1937 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 1938 |
|
|
|
| 1939 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 1940 |
|
|
{
|
| 1941 |
|
|
unsigned int r_type;
|
| 1942 |
|
|
struct elf_link_hash_entry * h;
|
| 1943 |
|
|
unsigned long r_symndx;
|
| 1944 |
|
|
|
| 1945 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 1946 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 1947 |
|
|
|
| 1948 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 1949 |
|
|
h = NULL;
|
| 1950 |
|
|
else
|
| 1951 |
|
|
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
| 1952 |
|
|
|
| 1953 |
|
|
switch (r_type)
|
| 1954 |
|
|
{
|
| 1955 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 1956 |
|
|
Reconstruct it for later use during GC. */
|
| 1957 |
|
|
case R_MICROBLAZE_GNU_VTINHERIT:
|
| 1958 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 1959 |
|
|
return FALSE;
|
| 1960 |
|
|
break;
|
| 1961 |
|
|
|
| 1962 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 1963 |
|
|
used. Record for later use during GC. */
|
| 1964 |
|
|
case R_MICROBLAZE_GNU_VTENTRY:
|
| 1965 |
|
|
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
| 1966 |
|
|
return FALSE;
|
| 1967 |
|
|
break;
|
| 1968 |
|
|
|
| 1969 |
|
|
/* This relocation requires .plt entry. */
|
| 1970 |
|
|
case R_MICROBLAZE_PLT_64:
|
| 1971 |
|
|
if (h != NULL)
|
| 1972 |
|
|
{
|
| 1973 |
|
|
h->needs_plt = 1;
|
| 1974 |
|
|
h->plt.refcount += 1;
|
| 1975 |
|
|
}
|
| 1976 |
|
|
break;
|
| 1977 |
|
|
|
| 1978 |
|
|
/* This relocation requires .got entry. */
|
| 1979 |
|
|
case R_MICROBLAZE_GOT_64:
|
| 1980 |
|
|
if (htab->sgot == NULL)
|
| 1981 |
|
|
{
|
| 1982 |
|
|
if (htab->elf.dynobj == NULL)
|
| 1983 |
|
|
htab->elf.dynobj = abfd;
|
| 1984 |
|
|
if (!create_got_section (htab->elf.dynobj, info))
|
| 1985 |
|
|
return FALSE;
|
| 1986 |
|
|
}
|
| 1987 |
|
|
if (h != NULL)
|
| 1988 |
|
|
{
|
| 1989 |
|
|
h->got.refcount += 1;
|
| 1990 |
|
|
}
|
| 1991 |
|
|
else
|
| 1992 |
|
|
{
|
| 1993 |
|
|
bfd_signed_vma *local_got_refcounts;
|
| 1994 |
|
|
|
| 1995 |
|
|
/* This is a global offset table entry for a local symbol. */
|
| 1996 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
| 1997 |
|
|
if (local_got_refcounts == NULL)
|
| 1998 |
|
|
{
|
| 1999 |
|
|
bfd_size_type size;
|
| 2000 |
|
|
|
| 2001 |
|
|
size = symtab_hdr->sh_info;
|
| 2002 |
|
|
size *= sizeof (bfd_signed_vma);
|
| 2003 |
|
|
local_got_refcounts = bfd_zalloc (abfd, size);
|
| 2004 |
|
|
if (local_got_refcounts == NULL)
|
| 2005 |
|
|
return FALSE;
|
| 2006 |
|
|
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
| 2007 |
|
|
}
|
| 2008 |
|
|
local_got_refcounts[r_symndx] += 1;
|
| 2009 |
|
|
}
|
| 2010 |
|
|
break;
|
| 2011 |
|
|
|
| 2012 |
|
|
case R_MICROBLAZE_64:
|
| 2013 |
|
|
case R_MICROBLAZE_64_PCREL:
|
| 2014 |
|
|
case R_MICROBLAZE_32:
|
| 2015 |
|
|
{
|
| 2016 |
|
|
if (h != NULL && !info->shared)
|
| 2017 |
|
|
{
|
| 2018 |
|
|
/* we may need a copy reloc. */
|
| 2019 |
|
|
h->non_got_ref = 1;
|
| 2020 |
|
|
|
| 2021 |
|
|
/* we may also need a .plt entry. */
|
| 2022 |
|
|
h->plt.refcount += 1;
|
| 2023 |
|
|
if (ELF32_R_TYPE (rel->r_info) != R_MICROBLAZE_64_PCREL)
|
| 2024 |
|
|
h->pointer_equality_needed = 1;
|
| 2025 |
|
|
}
|
| 2026 |
|
|
|
| 2027 |
|
|
|
| 2028 |
|
|
/* If we are creating a shared library, and this is a reloc
|
| 2029 |
|
|
against a global symbol, or a non PC relative reloc
|
| 2030 |
|
|
against a local symbol, then we need to copy the reloc
|
| 2031 |
|
|
into the shared library. However, if we are linking with
|
| 2032 |
|
|
-Bsymbolic, we do not need to copy a reloc against a
|
| 2033 |
|
|
global symbol which is defined in an object we are
|
| 2034 |
|
|
including in the link (i.e., DEF_REGULAR is set). At
|
| 2035 |
|
|
this point we have not seen all the input files, so it is
|
| 2036 |
|
|
possible that DEF_REGULAR is not set now but will be set
|
| 2037 |
|
|
later (it is never cleared). In case of a weak definition,
|
| 2038 |
|
|
DEF_REGULAR may be cleared later by a strong definition in
|
| 2039 |
|
|
a shared library. We account for that possibility below by
|
| 2040 |
|
|
storing information in the relocs_copied field of the hash
|
| 2041 |
|
|
table entry. A similar situation occurs when creating
|
| 2042 |
|
|
shared libraries and symbol visibility changes render the
|
| 2043 |
|
|
symbol local.
|
| 2044 |
|
|
|
| 2045 |
|
|
If on the other hand, we are creating an executable, we
|
| 2046 |
|
|
may need to keep relocations for symbols satisfied by a
|
| 2047 |
|
|
dynamic library if we manage to avoid copy relocs for the
|
| 2048 |
|
|
symbol. */
|
| 2049 |
|
|
|
| 2050 |
|
|
if ((info->shared
|
| 2051 |
|
|
&& (sec->flags & SEC_ALLOC) != 0
|
| 2052 |
|
|
&& (r_type != R_MICROBLAZE_64_PCREL
|
| 2053 |
|
|
|| (h != NULL
|
| 2054 |
|
|
&& (! info->symbolic
|
| 2055 |
|
|
|| h->root.type == bfd_link_hash_defweak
|
| 2056 |
|
|
|| !h->def_regular))))
|
| 2057 |
|
|
|| (!info->shared
|
| 2058 |
|
|
&& (sec->flags & SEC_ALLOC) != 0
|
| 2059 |
|
|
&& h != NULL
|
| 2060 |
|
|
&& (h->root.type == bfd_link_hash_defweak
|
| 2061 |
|
|
|| !h->def_regular)))
|
| 2062 |
|
|
{
|
| 2063 |
|
|
struct elf32_mb_dyn_relocs *p;
|
| 2064 |
|
|
struct elf32_mb_dyn_relocs **head;
|
| 2065 |
|
|
|
| 2066 |
|
|
/* When creating a shared object, we must copy these
|
| 2067 |
|
|
relocs into the output file. We create a reloc
|
| 2068 |
|
|
section in dynobj and make room for the reloc. */
|
| 2069 |
|
|
|
| 2070 |
|
|
if (sreloc == NULL)
|
| 2071 |
|
|
{
|
| 2072 |
|
|
const char *name;
|
| 2073 |
|
|
bfd *dynobj;
|
| 2074 |
|
|
unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
|
| 2075 |
|
|
unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
|
| 2076 |
|
|
|
| 2077 |
|
|
name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
|
| 2078 |
|
|
if (name == NULL)
|
| 2079 |
|
|
return FALSE;
|
| 2080 |
|
|
|
| 2081 |
|
|
if (strncmp (name, ".rela", 5) != 0
|
| 2082 |
|
|
|| strcmp (bfd_get_section_name (abfd, sec),
|
| 2083 |
|
|
name + 5) != 0)
|
| 2084 |
|
|
{
|
| 2085 |
|
|
(*_bfd_error_handler)
|
| 2086 |
|
|
(_("%B: bad relocation section name `%s\'"),
|
| 2087 |
|
|
abfd, name);
|
| 2088 |
|
|
}
|
| 2089 |
|
|
|
| 2090 |
|
|
if (htab->elf.dynobj == NULL)
|
| 2091 |
|
|
htab->elf.dynobj = abfd;
|
| 2092 |
|
|
dynobj = htab->elf.dynobj;
|
| 2093 |
|
|
|
| 2094 |
|
|
sreloc = bfd_get_section_by_name (dynobj, name);
|
| 2095 |
|
|
if (sreloc == NULL)
|
| 2096 |
|
|
{
|
| 2097 |
|
|
flagword flags;
|
| 2098 |
|
|
|
| 2099 |
|
|
sreloc = bfd_make_section (dynobj, name);
|
| 2100 |
|
|
flags = (SEC_HAS_CONTENTS | SEC_READONLY
|
| 2101 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2102 |
|
|
if ((sec->flags & SEC_ALLOC) != 0)
|
| 2103 |
|
|
flags |= SEC_ALLOC | SEC_LOAD;
|
| 2104 |
|
|
if (sreloc == NULL
|
| 2105 |
|
|
|| ! bfd_set_section_flags (dynobj, sreloc, flags)
|
| 2106 |
|
|
|| ! bfd_set_section_alignment (dynobj, sreloc, 2))
|
| 2107 |
|
|
return FALSE;
|
| 2108 |
|
|
}
|
| 2109 |
|
|
elf_section_data (sec)->sreloc = sreloc;
|
| 2110 |
|
|
}
|
| 2111 |
|
|
|
| 2112 |
|
|
/* If this is a global symbol, we count the number of
|
| 2113 |
|
|
relocations we need for this symbol. */
|
| 2114 |
|
|
if (h != NULL)
|
| 2115 |
|
|
head = &((struct elf32_mb_link_hash_entry *) h)->dyn_relocs;
|
| 2116 |
|
|
else
|
| 2117 |
|
|
{
|
| 2118 |
|
|
/* Track dynamic relocs needed for local syms too.
|
| 2119 |
|
|
We really need local syms available to do this
|
| 2120 |
|
|
easily. Oh well. */
|
| 2121 |
|
|
|
| 2122 |
|
|
asection *s;
|
| 2123 |
|
|
Elf_Internal_Sym *isym;
|
| 2124 |
|
|
void *vpp;
|
| 2125 |
|
|
|
| 2126 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_sec,
|
| 2127 |
|
|
abfd, r_symndx);
|
| 2128 |
|
|
if (isym == NULL)
|
| 2129 |
|
|
return FALSE;
|
| 2130 |
|
|
|
| 2131 |
|
|
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 2132 |
|
|
if (s == NULL)
|
| 2133 |
|
|
return FALSE;
|
| 2134 |
|
|
|
| 2135 |
|
|
vpp = &elf_section_data (s)->local_dynrel;
|
| 2136 |
|
|
head = (struct elf32_mb_dyn_relocs **) vpp;
|
| 2137 |
|
|
}
|
| 2138 |
|
|
|
| 2139 |
|
|
p = *head;
|
| 2140 |
|
|
if (p == NULL || p->sec != sec)
|
| 2141 |
|
|
{
|
| 2142 |
|
|
bfd_size_type amt = sizeof *p;
|
| 2143 |
|
|
p = ((struct elf32_mb_dyn_relocs *)
|
| 2144 |
|
|
bfd_alloc (htab->elf.dynobj, amt));
|
| 2145 |
|
|
if (p == NULL)
|
| 2146 |
|
|
return FALSE;
|
| 2147 |
|
|
p->next = *head;
|
| 2148 |
|
|
*head = p;
|
| 2149 |
|
|
p->sec = sec;
|
| 2150 |
|
|
p->count = 0;
|
| 2151 |
|
|
p->pc_count = 0;
|
| 2152 |
|
|
}
|
| 2153 |
|
|
|
| 2154 |
|
|
p->count += 1;
|
| 2155 |
|
|
if (r_type == R_MICROBLAZE_64_PCREL)
|
| 2156 |
|
|
p->pc_count += 1;
|
| 2157 |
|
|
}
|
| 2158 |
|
|
}
|
| 2159 |
|
|
break;
|
| 2160 |
|
|
}
|
| 2161 |
|
|
}
|
| 2162 |
|
|
|
| 2163 |
|
|
return TRUE;
|
| 2164 |
|
|
}
|
| 2165 |
|
|
|
| 2166 |
|
|
static bfd_boolean
|
| 2167 |
|
|
microblaze_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
|
| 2168 |
|
|
{
|
| 2169 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 2170 |
|
|
|
| 2171 |
|
|
htab = elf32_mb_hash_table (info);
|
| 2172 |
|
|
if (!htab->sgot && !create_got_section (dynobj, info))
|
| 2173 |
|
|
return FALSE;
|
| 2174 |
|
|
|
| 2175 |
|
|
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
| 2176 |
|
|
return FALSE;
|
| 2177 |
|
|
|
| 2178 |
|
|
htab->splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 2179 |
|
|
htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
|
| 2180 |
|
|
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 2181 |
|
|
if (!info->shared)
|
| 2182 |
|
|
htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
|
| 2183 |
|
|
|
| 2184 |
|
|
if (!htab->splt || !htab->srelplt || !htab->sdynbss
|
| 2185 |
|
|
|| (!info->shared && !htab->srelbss))
|
| 2186 |
|
|
abort ();
|
| 2187 |
|
|
|
| 2188 |
|
|
return TRUE;
|
| 2189 |
|
|
}
|
| 2190 |
|
|
|
| 2191 |
|
|
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
| 2192 |
|
|
|
| 2193 |
|
|
static void
|
| 2194 |
|
|
microblaze_elf_copy_indirect_symbol (struct bfd_link_info *info,
|
| 2195 |
|
|
struct elf_link_hash_entry *dir,
|
| 2196 |
|
|
struct elf_link_hash_entry *ind)
|
| 2197 |
|
|
{
|
| 2198 |
|
|
struct elf32_mb_link_hash_entry *edir, *eind;
|
| 2199 |
|
|
|
| 2200 |
|
|
edir = (struct elf32_mb_link_hash_entry *) dir;
|
| 2201 |
|
|
eind = (struct elf32_mb_link_hash_entry *) ind;
|
| 2202 |
|
|
|
| 2203 |
|
|
if (eind->dyn_relocs != NULL)
|
| 2204 |
|
|
{
|
| 2205 |
|
|
if (edir->dyn_relocs != NULL)
|
| 2206 |
|
|
{
|
| 2207 |
|
|
struct elf32_mb_dyn_relocs **pp;
|
| 2208 |
|
|
struct elf32_mb_dyn_relocs *p;
|
| 2209 |
|
|
|
| 2210 |
|
|
if (ind->root.type == bfd_link_hash_indirect)
|
| 2211 |
|
|
abort ();
|
| 2212 |
|
|
|
| 2213 |
|
|
/* Add reloc counts against the weak sym to the strong sym
|
| 2214 |
|
|
list. Merge any entries against the same section. */
|
| 2215 |
|
|
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
| 2216 |
|
|
{
|
| 2217 |
|
|
struct elf32_mb_dyn_relocs *q;
|
| 2218 |
|
|
|
| 2219 |
|
|
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
| 2220 |
|
|
if (q->sec == p->sec)
|
| 2221 |
|
|
{
|
| 2222 |
|
|
q->pc_count += p->pc_count;
|
| 2223 |
|
|
q->count += p->count;
|
| 2224 |
|
|
*pp = p->next;
|
| 2225 |
|
|
break;
|
| 2226 |
|
|
}
|
| 2227 |
|
|
if (q == NULL)
|
| 2228 |
|
|
pp = &p->next;
|
| 2229 |
|
|
}
|
| 2230 |
|
|
*pp = edir->dyn_relocs;
|
| 2231 |
|
|
}
|
| 2232 |
|
|
|
| 2233 |
|
|
edir->dyn_relocs = eind->dyn_relocs;
|
| 2234 |
|
|
eind->dyn_relocs = NULL;
|
| 2235 |
|
|
}
|
| 2236 |
|
|
|
| 2237 |
|
|
_bfd_elf_link_hash_copy_indirect (info, dir, ind);
|
| 2238 |
|
|
}
|
| 2239 |
|
|
|
| 2240 |
|
|
static bfd_boolean
|
| 2241 |
|
|
microblaze_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
| 2242 |
|
|
struct elf_link_hash_entry *h)
|
| 2243 |
|
|
{
|
| 2244 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 2245 |
|
|
struct elf32_mb_link_hash_entry * eh;
|
| 2246 |
|
|
struct elf32_mb_dyn_relocs *p;
|
| 2247 |
|
|
asection *sdynbss, *s;
|
| 2248 |
|
|
unsigned int power_of_two;
|
| 2249 |
|
|
bfd *dynobj;
|
| 2250 |
|
|
|
| 2251 |
|
|
htab = elf32_mb_hash_table (info);
|
| 2252 |
|
|
|
| 2253 |
|
|
/* If this is a function, put it in the procedure linkage table. We
|
| 2254 |
|
|
will fill in the contents of the procedure linkage table later,
|
| 2255 |
|
|
when we know the address of the .got section. */
|
| 2256 |
|
|
if (h->type == STT_FUNC
|
| 2257 |
|
|
|| h->needs_plt)
|
| 2258 |
|
|
{
|
| 2259 |
|
|
if (h->plt.refcount <= 0
|
| 2260 |
|
|
|| SYMBOL_CALLS_LOCAL (info, h)
|
| 2261 |
|
|
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
| 2262 |
|
|
&& h->root.type == bfd_link_hash_undefweak))
|
| 2263 |
|
|
{
|
| 2264 |
|
|
/* This case can occur if we saw a PLT reloc in an input
|
| 2265 |
|
|
file, but the symbol was never referred to by a dynamic
|
| 2266 |
|
|
object, or if all references were garbage collected. In
|
| 2267 |
|
|
such a case, we don't actually need to build a procedure
|
| 2268 |
|
|
linkage table, and we can just do a PC32 reloc instead. */
|
| 2269 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 2270 |
|
|
h->needs_plt = 0;
|
| 2271 |
|
|
}
|
| 2272 |
|
|
|
| 2273 |
|
|
return TRUE;
|
| 2274 |
|
|
}
|
| 2275 |
|
|
else
|
| 2276 |
|
|
/* It's possible that we incorrectly decided a .plt reloc was
|
| 2277 |
|
|
needed for an R_MICROBLAZE_64_PCREL reloc to a non-function sym in
|
| 2278 |
|
|
check_relocs. We can't decide accurately between function and
|
| 2279 |
|
|
non-function syms in check-relocs; Objects loaded later in
|
| 2280 |
|
|
the link may change h->type. So fix it now. */
|
| 2281 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 2282 |
|
|
|
| 2283 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 2284 |
|
|
processor independent code will have arranged for us to see the
|
| 2285 |
|
|
real definition first, and we can just use the same value. */
|
| 2286 |
|
|
if (h->u.weakdef != NULL)
|
| 2287 |
|
|
{
|
| 2288 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
| 2289 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
| 2290 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
| 2291 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
| 2292 |
|
|
return TRUE;
|
| 2293 |
|
|
}
|
| 2294 |
|
|
|
| 2295 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 2296 |
|
|
is not a function. */
|
| 2297 |
|
|
|
| 2298 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 2299 |
|
|
only references to the symbol are via the global offset table.
|
| 2300 |
|
|
For such cases we need not do anything here; the relocations will
|
| 2301 |
|
|
be handled correctly by relocate_section. */
|
| 2302 |
|
|
if (info->shared)
|
| 2303 |
|
|
return TRUE;
|
| 2304 |
|
|
|
| 2305 |
|
|
/* If there are no references to this symbol that do not use the
|
| 2306 |
|
|
GOT, we don't need to generate a copy reloc. */
|
| 2307 |
|
|
if (!h->non_got_ref)
|
| 2308 |
|
|
return TRUE;
|
| 2309 |
|
|
|
| 2310 |
|
|
/* If -z nocopyreloc was given, we won't generate them either. */
|
| 2311 |
|
|
if (info->nocopyreloc)
|
| 2312 |
|
|
{
|
| 2313 |
|
|
h->non_got_ref = 0;
|
| 2314 |
|
|
return TRUE;
|
| 2315 |
|
|
}
|
| 2316 |
|
|
|
| 2317 |
|
|
eh = (struct elf32_mb_link_hash_entry *) h;
|
| 2318 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 2319 |
|
|
{
|
| 2320 |
|
|
s = p->sec->output_section;
|
| 2321 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
| 2322 |
|
|
break;
|
| 2323 |
|
|
}
|
| 2324 |
|
|
|
| 2325 |
|
|
/* If we didn't find any dynamic relocs in read-only sections, then
|
| 2326 |
|
|
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
| 2327 |
|
|
if (p == NULL)
|
| 2328 |
|
|
{
|
| 2329 |
|
|
h->non_got_ref = 0;
|
| 2330 |
|
|
return TRUE;
|
| 2331 |
|
|
}
|
| 2332 |
|
|
|
| 2333 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 2334 |
|
|
become part of the .bss section of the executable. There will be
|
| 2335 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 2336 |
|
|
object will contain position independent code, so all references
|
| 2337 |
|
|
from the dynamic object to this symbol will go through the global
|
| 2338 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 2339 |
|
|
determine the address it must put in the global offset table, so
|
| 2340 |
|
|
both the dynamic object and the regular object will refer to the
|
| 2341 |
|
|
same memory location for the variable. */
|
| 2342 |
|
|
|
| 2343 |
|
|
/* We must generate a R_MICROBLAZE_COPY reloc to tell the dynamic linker
|
| 2344 |
|
|
to copy the initial value out of the dynamic object and into the
|
| 2345 |
|
|
runtime process image. */
|
| 2346 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 2347 |
|
|
BFD_ASSERT (dynobj != NULL);
|
| 2348 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 2349 |
|
|
{
|
| 2350 |
|
|
htab->srelbss->size += sizeof (Elf32_External_Rela);
|
| 2351 |
|
|
h->needs_copy = 1;
|
| 2352 |
|
|
}
|
| 2353 |
|
|
|
| 2354 |
|
|
/* We need to figure out the alignment required for this symbol. I
|
| 2355 |
|
|
have no idea how ELF linkers handle this. */
|
| 2356 |
|
|
power_of_two = bfd_log2 (h->size);
|
| 2357 |
|
|
if (power_of_two > 3)
|
| 2358 |
|
|
power_of_two = 3;
|
| 2359 |
|
|
|
| 2360 |
|
|
sdynbss = htab->sdynbss;
|
| 2361 |
|
|
/* Apply the required alignment. */
|
| 2362 |
|
|
sdynbss->size = BFD_ALIGN (sdynbss->size, (bfd_size_type) (1 << power_of_two));
|
| 2363 |
|
|
if (power_of_two > bfd_get_section_alignment (dynobj, sdynbss))
|
| 2364 |
|
|
{
|
| 2365 |
|
|
if (! bfd_set_section_alignment (dynobj, sdynbss, power_of_two))
|
| 2366 |
|
|
return FALSE;
|
| 2367 |
|
|
}
|
| 2368 |
|
|
|
| 2369 |
|
|
/* Define the symbol as being at this point in the section. */
|
| 2370 |
|
|
h->root.u.def.section = sdynbss;
|
| 2371 |
|
|
h->root.u.def.value = sdynbss->size;
|
| 2372 |
|
|
|
| 2373 |
|
|
/* Increment the section size to make room for the symbol. */
|
| 2374 |
|
|
sdynbss->size += h->size;
|
| 2375 |
|
|
return TRUE;
|
| 2376 |
|
|
}
|
| 2377 |
|
|
|
| 2378 |
|
|
/* Allocate space in .plt, .got and associated reloc sections for
|
| 2379 |
|
|
dynamic relocs. */
|
| 2380 |
|
|
|
| 2381 |
|
|
static bfd_boolean
|
| 2382 |
|
|
allocate_dynrelocs (struct elf_link_hash_entry *h, void * dat)
|
| 2383 |
|
|
{
|
| 2384 |
|
|
struct bfd_link_info *info;
|
| 2385 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 2386 |
|
|
struct elf32_mb_link_hash_entry *eh;
|
| 2387 |
|
|
struct elf32_mb_dyn_relocs *p;
|
| 2388 |
|
|
|
| 2389 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 2390 |
|
|
return TRUE;
|
| 2391 |
|
|
|
| 2392 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
| 2393 |
|
|
/* When warning symbols are created, they **replace** the "real"
|
| 2394 |
|
|
entry in the hash table, thus we never get to see the real
|
| 2395 |
|
|
symbol in a hash traversal. So look at it now. */
|
| 2396 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 2397 |
|
|
|
| 2398 |
|
|
info = (struct bfd_link_info *) dat;
|
| 2399 |
|
|
htab = elf32_mb_hash_table (info);
|
| 2400 |
|
|
|
| 2401 |
|
|
if (htab->elf.dynamic_sections_created
|
| 2402 |
|
|
&& h->plt.refcount > 0)
|
| 2403 |
|
|
{
|
| 2404 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 2405 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 2406 |
|
|
if (h->dynindx == -1
|
| 2407 |
|
|
&& !h->forced_local)
|
| 2408 |
|
|
{
|
| 2409 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 2410 |
|
|
return FALSE;
|
| 2411 |
|
|
}
|
| 2412 |
|
|
|
| 2413 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
|
| 2414 |
|
|
{
|
| 2415 |
|
|
asection *s = htab->splt;
|
| 2416 |
|
|
|
| 2417 |
|
|
/* The first entry in .plt is reserved. */
|
| 2418 |
|
|
if (s->size == 0)
|
| 2419 |
|
|
s->size = PLT_ENTRY_SIZE;
|
| 2420 |
|
|
|
| 2421 |
|
|
h->plt.offset = s->size;
|
| 2422 |
|
|
|
| 2423 |
|
|
/* If this symbol is not defined in a regular file, and we are
|
| 2424 |
|
|
not generating a shared library, then set the symbol to this
|
| 2425 |
|
|
location in the .plt. This is required to make function
|
| 2426 |
|
|
pointers compare as equal between the normal executable and
|
| 2427 |
|
|
the shared library. */
|
| 2428 |
|
|
if (! info->shared
|
| 2429 |
|
|
&& !h->def_regular)
|
| 2430 |
|
|
{
|
| 2431 |
|
|
h->root.u.def.section = s;
|
| 2432 |
|
|
h->root.u.def.value = h->plt.offset;
|
| 2433 |
|
|
}
|
| 2434 |
|
|
|
| 2435 |
|
|
/* Make room for this entry. */
|
| 2436 |
|
|
s->size += PLT_ENTRY_SIZE;
|
| 2437 |
|
|
|
| 2438 |
|
|
/* We also need to make an entry in the .got.plt section, which
|
| 2439 |
|
|
will be placed in the .got section by the linker script. */
|
| 2440 |
|
|
htab->sgotplt->size += 4;
|
| 2441 |
|
|
|
| 2442 |
|
|
/* We also need to make an entry in the .rel.plt section. */
|
| 2443 |
|
|
htab->srelplt->size += sizeof (Elf32_External_Rela);
|
| 2444 |
|
|
}
|
| 2445 |
|
|
else
|
| 2446 |
|
|
{
|
| 2447 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 2448 |
|
|
h->needs_plt = 0;
|
| 2449 |
|
|
}
|
| 2450 |
|
|
}
|
| 2451 |
|
|
else
|
| 2452 |
|
|
{
|
| 2453 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 2454 |
|
|
h->needs_plt = 0;
|
| 2455 |
|
|
}
|
| 2456 |
|
|
|
| 2457 |
|
|
if (h->got.refcount > 0)
|
| 2458 |
|
|
{
|
| 2459 |
|
|
asection *s;
|
| 2460 |
|
|
|
| 2461 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 2462 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 2463 |
|
|
if (h->dynindx == -1
|
| 2464 |
|
|
&& !h->forced_local)
|
| 2465 |
|
|
{
|
| 2466 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 2467 |
|
|
return FALSE;
|
| 2468 |
|
|
}
|
| 2469 |
|
|
|
| 2470 |
|
|
s = htab->sgot;
|
| 2471 |
|
|
h->got.offset = s->size;
|
| 2472 |
|
|
s->size += 4;
|
| 2473 |
|
|
htab->srelgot->size += sizeof (Elf32_External_Rela);
|
| 2474 |
|
|
}
|
| 2475 |
|
|
else
|
| 2476 |
|
|
h->got.offset = (bfd_vma) -1;
|
| 2477 |
|
|
|
| 2478 |
|
|
eh = (struct elf32_mb_link_hash_entry *) h;
|
| 2479 |
|
|
if (eh->dyn_relocs == NULL)
|
| 2480 |
|
|
return TRUE;
|
| 2481 |
|
|
|
| 2482 |
|
|
/* In the shared -Bsymbolic case, discard space allocated for
|
| 2483 |
|
|
dynamic pc-relative relocs against symbols which turn out to be
|
| 2484 |
|
|
defined in regular objects. For the normal shared case, discard
|
| 2485 |
|
|
space for pc-relative relocs that have become local due to symbol
|
| 2486 |
|
|
visibility changes. */
|
| 2487 |
|
|
|
| 2488 |
|
|
if (info->shared)
|
| 2489 |
|
|
{
|
| 2490 |
|
|
if (h->def_regular
|
| 2491 |
|
|
&& (h->forced_local
|
| 2492 |
|
|
|| info->symbolic))
|
| 2493 |
|
|
{
|
| 2494 |
|
|
struct elf32_mb_dyn_relocs **pp;
|
| 2495 |
|
|
|
| 2496 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 2497 |
|
|
{
|
| 2498 |
|
|
p->count -= p->pc_count;
|
| 2499 |
|
|
p->pc_count = 0;
|
| 2500 |
|
|
if (p->count == 0)
|
| 2501 |
|
|
*pp = p->next;
|
| 2502 |
|
|
else
|
| 2503 |
|
|
pp = &p->next;
|
| 2504 |
|
|
}
|
| 2505 |
|
|
}
|
| 2506 |
|
|
}
|
| 2507 |
|
|
else
|
| 2508 |
|
|
{
|
| 2509 |
|
|
/* For the non-shared case, discard space for relocs against
|
| 2510 |
|
|
symbols which turn out to need copy relocs or are not
|
| 2511 |
|
|
dynamic. */
|
| 2512 |
|
|
|
| 2513 |
|
|
if (!h->non_got_ref
|
| 2514 |
|
|
&& ((h->def_dynamic
|
| 2515 |
|
|
&& !h->def_regular)
|
| 2516 |
|
|
|| (htab->elf.dynamic_sections_created
|
| 2517 |
|
|
&& (h->root.type == bfd_link_hash_undefweak
|
| 2518 |
|
|
|| h->root.type == bfd_link_hash_undefined))))
|
| 2519 |
|
|
{
|
| 2520 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 2521 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 2522 |
|
|
if (h->dynindx == -1
|
| 2523 |
|
|
&& !h->forced_local)
|
| 2524 |
|
|
{
|
| 2525 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 2526 |
|
|
return FALSE;
|
| 2527 |
|
|
}
|
| 2528 |
|
|
|
| 2529 |
|
|
/* If that succeeded, we know we'll be keeping all the
|
| 2530 |
|
|
relocs. */
|
| 2531 |
|
|
if (h->dynindx != -1)
|
| 2532 |
|
|
goto keep;
|
| 2533 |
|
|
}
|
| 2534 |
|
|
|
| 2535 |
|
|
eh->dyn_relocs = NULL;
|
| 2536 |
|
|
|
| 2537 |
|
|
keep: ;
|
| 2538 |
|
|
}
|
| 2539 |
|
|
|
| 2540 |
|
|
/* Finally, allocate space. */
|
| 2541 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 2542 |
|
|
{
|
| 2543 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
| 2544 |
|
|
sreloc->size += p->count * sizeof (Elf32_External_Rela);
|
| 2545 |
|
|
}
|
| 2546 |
|
|
|
| 2547 |
|
|
return TRUE;
|
| 2548 |
|
|
}
|
| 2549 |
|
|
|
| 2550 |
|
|
/* Set the sizes of the dynamic sections. */
|
| 2551 |
|
|
|
| 2552 |
|
|
static bfd_boolean
|
| 2553 |
|
|
microblaze_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
| 2554 |
|
|
struct bfd_link_info *info)
|
| 2555 |
|
|
{
|
| 2556 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 2557 |
|
|
bfd *dynobj;
|
| 2558 |
|
|
asection *s;
|
| 2559 |
|
|
bfd *ibfd;
|
| 2560 |
|
|
|
| 2561 |
|
|
htab = elf32_mb_hash_table (info);
|
| 2562 |
|
|
dynobj = htab->elf.dynobj;
|
| 2563 |
|
|
BFD_ASSERT (dynobj != NULL);
|
| 2564 |
|
|
|
| 2565 |
|
|
/* Set up .got offsets for local syms, and space for local dynamic
|
| 2566 |
|
|
relocs. */
|
| 2567 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 2568 |
|
|
{
|
| 2569 |
|
|
bfd_signed_vma *local_got;
|
| 2570 |
|
|
bfd_signed_vma *end_local_got;
|
| 2571 |
|
|
bfd_size_type locsymcount;
|
| 2572 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 2573 |
|
|
asection *srel;
|
| 2574 |
|
|
|
| 2575 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
| 2576 |
|
|
continue;
|
| 2577 |
|
|
|
| 2578 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
| 2579 |
|
|
{
|
| 2580 |
|
|
struct elf32_mb_dyn_relocs *p;
|
| 2581 |
|
|
|
| 2582 |
|
|
for (p = ((struct elf32_mb_dyn_relocs *)
|
| 2583 |
|
|
elf_section_data (s)->local_dynrel);
|
| 2584 |
|
|
p != NULL;
|
| 2585 |
|
|
p = p->next)
|
| 2586 |
|
|
{
|
| 2587 |
|
|
if (!bfd_is_abs_section (p->sec)
|
| 2588 |
|
|
&& bfd_is_abs_section (p->sec->output_section))
|
| 2589 |
|
|
{
|
| 2590 |
|
|
/* Input section has been discarded, either because
|
| 2591 |
|
|
it is a copy of a linkonce section or due to
|
| 2592 |
|
|
linker script /DISCARD/, so we'll be discarding
|
| 2593 |
|
|
the relocs too. */
|
| 2594 |
|
|
}
|
| 2595 |
|
|
else if (p->count != 0)
|
| 2596 |
|
|
{
|
| 2597 |
|
|
srel = elf_section_data (p->sec)->sreloc;
|
| 2598 |
|
|
srel->size += p->count * sizeof (Elf32_External_Rela);
|
| 2599 |
|
|
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
| 2600 |
|
|
info->flags |= DF_TEXTREL;
|
| 2601 |
|
|
}
|
| 2602 |
|
|
}
|
| 2603 |
|
|
}
|
| 2604 |
|
|
|
| 2605 |
|
|
local_got = elf_local_got_refcounts (ibfd);
|
| 2606 |
|
|
if (!local_got)
|
| 2607 |
|
|
continue;
|
| 2608 |
|
|
|
| 2609 |
|
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
| 2610 |
|
|
locsymcount = symtab_hdr->sh_info;
|
| 2611 |
|
|
end_local_got = local_got + locsymcount;
|
| 2612 |
|
|
s = htab->sgot;
|
| 2613 |
|
|
srel = htab->srelgot;
|
| 2614 |
|
|
|
| 2615 |
|
|
for (; local_got < end_local_got; ++local_got)
|
| 2616 |
|
|
{
|
| 2617 |
|
|
if (*local_got > 0)
|
| 2618 |
|
|
{
|
| 2619 |
|
|
*local_got = s->size;
|
| 2620 |
|
|
s->size += 4;
|
| 2621 |
|
|
if (info->shared)
|
| 2622 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
| 2623 |
|
|
}
|
| 2624 |
|
|
else
|
| 2625 |
|
|
*local_got = (bfd_vma) -1;
|
| 2626 |
|
|
}
|
| 2627 |
|
|
}
|
| 2628 |
|
|
|
| 2629 |
|
|
/* Allocate global sym .plt and .got entries, and space for global
|
| 2630 |
|
|
sym dynamic relocs. */
|
| 2631 |
|
|
elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
|
| 2632 |
|
|
|
| 2633 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 2634 |
|
|
{
|
| 2635 |
|
|
/* Make space for the trailing nop in .plt. */
|
| 2636 |
|
|
if (htab->splt->size > 0)
|
| 2637 |
|
|
htab->splt->size += 4;
|
| 2638 |
|
|
}
|
| 2639 |
|
|
|
| 2640 |
|
|
/* The check_relocs and adjust_dynamic_symbol entry points have
|
| 2641 |
|
|
determined the sizes of the various dynamic sections. Allocate
|
| 2642 |
|
|
memory for them. */
|
| 2643 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
| 2644 |
|
|
{
|
| 2645 |
|
|
const char *name;
|
| 2646 |
|
|
bfd_boolean strip = FALSE;
|
| 2647 |
|
|
|
| 2648 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 2649 |
|
|
continue;
|
| 2650 |
|
|
|
| 2651 |
|
|
/* It's OK to base decisions on the section name, because none
|
| 2652 |
|
|
of the dynobj section names depend upon the input files. */
|
| 2653 |
|
|
name = bfd_get_section_name (dynobj, s);
|
| 2654 |
|
|
|
| 2655 |
|
|
if (strncmp (name, ".rela", 5) == 0)
|
| 2656 |
|
|
{
|
| 2657 |
|
|
if (s->size == 0)
|
| 2658 |
|
|
{
|
| 2659 |
|
|
/* If we don't need this section, strip it from the
|
| 2660 |
|
|
output file. This is to handle .rela.bss and
|
| 2661 |
|
|
.rela.plt. We must create it in
|
| 2662 |
|
|
create_dynamic_sections, because it must be created
|
| 2663 |
|
|
before the linker maps input sections to output
|
| 2664 |
|
|
sections. The linker does that before
|
| 2665 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 2666 |
|
|
function which decides whether anything needs to go
|
| 2667 |
|
|
into these sections. */
|
| 2668 |
|
|
strip = TRUE;
|
| 2669 |
|
|
}
|
| 2670 |
|
|
else
|
| 2671 |
|
|
{
|
| 2672 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 2673 |
|
|
to copy relocs into the output file. */
|
| 2674 |
|
|
s->reloc_count = 0;
|
| 2675 |
|
|
}
|
| 2676 |
|
|
}
|
| 2677 |
|
|
else if (s != htab->splt && s != htab->sgot && s != htab->sgotplt)
|
| 2678 |
|
|
{
|
| 2679 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 2680 |
|
|
continue;
|
| 2681 |
|
|
}
|
| 2682 |
|
|
|
| 2683 |
|
|
if (strip)
|
| 2684 |
|
|
{
|
| 2685 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 2686 |
|
|
continue;
|
| 2687 |
|
|
}
|
| 2688 |
|
|
|
| 2689 |
|
|
/* Allocate memory for the section contents. */
|
| 2690 |
|
|
/* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
|
| 2691 |
|
|
Unused entries should be reclaimed before the section's contents
|
| 2692 |
|
|
are written out, but at the moment this does not happen. Thus in
|
| 2693 |
|
|
order to prevent writing out garbage, we initialise the section's
|
| 2694 |
|
|
contents to zero. */
|
| 2695 |
|
|
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
|
| 2696 |
|
|
if (s->contents == NULL && s->size != 0)
|
| 2697 |
|
|
return FALSE;
|
| 2698 |
|
|
}
|
| 2699 |
|
|
|
| 2700 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 2701 |
|
|
{
|
| 2702 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 2703 |
|
|
values later, in microblaze_elf_finish_dynamic_sections, but we
|
| 2704 |
|
|
must add the entries now so that we get the correct size for
|
| 2705 |
|
|
the .dynamic section. The DT_DEBUG entry is filled in by the
|
| 2706 |
|
|
dynamic linker and used by the debugger. */
|
| 2707 |
|
|
#define add_dynamic_entry(TAG, VAL) \
|
| 2708 |
|
|
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
| 2709 |
|
|
|
| 2710 |
|
|
if (info->executable)
|
| 2711 |
|
|
{
|
| 2712 |
|
|
if (!add_dynamic_entry (DT_DEBUG, 0))
|
| 2713 |
|
|
return FALSE;
|
| 2714 |
|
|
}
|
| 2715 |
|
|
|
| 2716 |
|
|
if (!add_dynamic_entry (DT_RELA, 0)
|
| 2717 |
|
|
|| !add_dynamic_entry (DT_RELASZ, 0)
|
| 2718 |
|
|
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
|
| 2719 |
|
|
return FALSE;
|
| 2720 |
|
|
|
| 2721 |
|
|
if (htab->splt->size != 0)
|
| 2722 |
|
|
{
|
| 2723 |
|
|
if (!add_dynamic_entry (DT_PLTGOT, 0)
|
| 2724 |
|
|
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
| 2725 |
|
|
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
| 2726 |
|
|
|| !add_dynamic_entry (DT_JMPREL, 0)
|
| 2727 |
|
|
|| !add_dynamic_entry (DT_BIND_NOW, 1))
|
| 2728 |
|
|
return FALSE;
|
| 2729 |
|
|
}
|
| 2730 |
|
|
|
| 2731 |
|
|
if (info->flags & DF_TEXTREL)
|
| 2732 |
|
|
{
|
| 2733 |
|
|
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
| 2734 |
|
|
return FALSE;
|
| 2735 |
|
|
}
|
| 2736 |
|
|
}
|
| 2737 |
|
|
#undef add_dynamic_entry
|
| 2738 |
|
|
return TRUE;
|
| 2739 |
|
|
}
|
| 2740 |
|
|
|
| 2741 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 2742 |
|
|
dynamic sections here. */
|
| 2743 |
|
|
|
| 2744 |
|
|
static bfd_boolean
|
| 2745 |
|
|
microblaze_elf_finish_dynamic_symbol (bfd *output_bfd,
|
| 2746 |
|
|
struct bfd_link_info *info,
|
| 2747 |
|
|
struct elf_link_hash_entry *h,
|
| 2748 |
|
|
Elf_Internal_Sym *sym)
|
| 2749 |
|
|
{
|
| 2750 |
|
|
bfd *dynobj;
|
| 2751 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 2752 |
|
|
|
| 2753 |
|
|
htab = elf32_mb_hash_table (info);
|
| 2754 |
|
|
dynobj = htab->elf.dynobj;
|
| 2755 |
|
|
|
| 2756 |
|
|
if (h->plt.offset != (bfd_vma) -1)
|
| 2757 |
|
|
{
|
| 2758 |
|
|
asection *splt;
|
| 2759 |
|
|
asection *srela;
|
| 2760 |
|
|
asection *sgotplt;
|
| 2761 |
|
|
Elf_Internal_Rela rela;
|
| 2762 |
|
|
bfd_byte *loc;
|
| 2763 |
|
|
bfd_vma plt_index;
|
| 2764 |
|
|
bfd_vma got_offset;
|
| 2765 |
|
|
bfd_vma got_addr;
|
| 2766 |
|
|
|
| 2767 |
|
|
/* This symbol has an entry in the procedure linkage table. Set
|
| 2768 |
|
|
it up. */
|
| 2769 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 2770 |
|
|
|
| 2771 |
|
|
splt = htab->splt;
|
| 2772 |
|
|
srela = htab->srelplt;
|
| 2773 |
|
|
sgotplt = htab->sgotplt;
|
| 2774 |
|
|
BFD_ASSERT (splt != NULL && srela != NULL && sgotplt != NULL);
|
| 2775 |
|
|
|
| 2776 |
|
|
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; /* first entry reserved. */
|
| 2777 |
|
|
got_offset = (plt_index + 3) * 4; /* 3 reserved ??? */
|
| 2778 |
|
|
got_addr = got_offset;
|
| 2779 |
|
|
|
| 2780 |
|
|
/* For non-PIC objects we need absolute address of the GOT entry. */
|
| 2781 |
|
|
if (!info->shared)
|
| 2782 |
|
|
got_addr += htab->sgotplt->output_section->vma + sgotplt->output_offset;
|
| 2783 |
|
|
|
| 2784 |
|
|
/* Fill in the entry in the procedure linkage table. */
|
| 2785 |
|
|
bfd_put_32 (output_bfd, PLT_ENTRY_WORD_0 + ((got_addr >> 16) & 0xffff),
|
| 2786 |
|
|
splt->contents + h->plt.offset);
|
| 2787 |
|
|
if (info->shared)
|
| 2788 |
|
|
bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1 + (got_addr & 0xffff),
|
| 2789 |
|
|
splt->contents + h->plt.offset + 4);
|
| 2790 |
|
|
else
|
| 2791 |
|
|
bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1_NOPIC + (got_addr & 0xffff),
|
| 2792 |
|
|
splt->contents + h->plt.offset + 4);
|
| 2793 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_2,
|
| 2794 |
|
|
splt->contents + h->plt.offset + 8);
|
| 2795 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_3,
|
| 2796 |
|
|
splt->contents + h->plt.offset + 12);
|
| 2797 |
|
|
|
| 2798 |
|
|
/* Any additions to the .got section??? */
|
| 2799 |
|
|
/* bfd_put_32 (output_bfd,
|
| 2800 |
|
|
splt->output_section->vma + splt->output_offset + h->plt.offset + 4,
|
| 2801 |
|
|
sgotplt->contents + got_offset); */
|
| 2802 |
|
|
|
| 2803 |
|
|
/* Fill in the entry in the .rela.plt section. */
|
| 2804 |
|
|
rela.r_offset = (sgotplt->output_section->vma
|
| 2805 |
|
|
+ sgotplt->output_offset
|
| 2806 |
|
|
+ got_offset);
|
| 2807 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_JUMP_SLOT);
|
| 2808 |
|
|
rela.r_addend = 0;
|
| 2809 |
|
|
loc = srela->contents;
|
| 2810 |
|
|
loc += plt_index * sizeof (Elf32_External_Rela);
|
| 2811 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 2812 |
|
|
|
| 2813 |
|
|
if (!h->def_regular)
|
| 2814 |
|
|
{
|
| 2815 |
|
|
/* Mark the symbol as undefined, rather than as defined in
|
| 2816 |
|
|
the .plt section. Zero the value. */
|
| 2817 |
|
|
sym->st_shndx = SHN_UNDEF;
|
| 2818 |
|
|
sym->st_value = 0;
|
| 2819 |
|
|
}
|
| 2820 |
|
|
}
|
| 2821 |
|
|
|
| 2822 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
| 2823 |
|
|
{
|
| 2824 |
|
|
asection *sgot;
|
| 2825 |
|
|
asection *srela;
|
| 2826 |
|
|
Elf_Internal_Rela rela;
|
| 2827 |
|
|
bfd_byte *loc;
|
| 2828 |
|
|
|
| 2829 |
|
|
/* This symbol has an entry in the global offset table. Set it
|
| 2830 |
|
|
up. */
|
| 2831 |
|
|
|
| 2832 |
|
|
sgot = htab->sgot;
|
| 2833 |
|
|
srela = htab->srelgot;
|
| 2834 |
|
|
BFD_ASSERT (sgot != NULL && srela != NULL);
|
| 2835 |
|
|
|
| 2836 |
|
|
rela.r_offset = (sgot->output_section->vma
|
| 2837 |
|
|
+ sgot->output_offset
|
| 2838 |
|
|
+ (h->got.offset &~ (bfd_vma) 1));
|
| 2839 |
|
|
|
| 2840 |
|
|
/* If this is a -Bsymbolic link, and the symbol is defined
|
| 2841 |
|
|
locally, we just want to emit a RELATIVE reloc. Likewise if
|
| 2842 |
|
|
the symbol was forced to be local because of a version file.
|
| 2843 |
|
|
The entry in the global offset table will already have been
|
| 2844 |
|
|
initialized in the relocate_section function. */
|
| 2845 |
|
|
if (info->shared
|
| 2846 |
|
|
&& (info->symbolic || h->dynindx == -1)
|
| 2847 |
|
|
&& h->def_regular)
|
| 2848 |
|
|
{
|
| 2849 |
|
|
asection *sec = h->root.u.def.section;
|
| 2850 |
|
|
rela.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL);
|
| 2851 |
|
|
rela.r_addend = (h->root.u.def.value
|
| 2852 |
|
|
+ sec->output_section->vma
|
| 2853 |
|
|
+ sec->output_offset);
|
| 2854 |
|
|
}
|
| 2855 |
|
|
else
|
| 2856 |
|
|
{
|
| 2857 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_GLOB_DAT);
|
| 2858 |
|
|
rela.r_addend = 0;
|
| 2859 |
|
|
}
|
| 2860 |
|
|
|
| 2861 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0,
|
| 2862 |
|
|
sgot->contents + (h->got.offset &~ (bfd_vma) 1));
|
| 2863 |
|
|
loc = srela->contents;
|
| 2864 |
|
|
loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
|
| 2865 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 2866 |
|
|
}
|
| 2867 |
|
|
|
| 2868 |
|
|
if (h->needs_copy)
|
| 2869 |
|
|
{
|
| 2870 |
|
|
asection *s;
|
| 2871 |
|
|
Elf_Internal_Rela rela;
|
| 2872 |
|
|
bfd_byte *loc;
|
| 2873 |
|
|
|
| 2874 |
|
|
/* This symbols needs a copy reloc. Set it up. */
|
| 2875 |
|
|
|
| 2876 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 2877 |
|
|
|
| 2878 |
|
|
s = bfd_get_section_by_name (h->root.u.def.section->owner,
|
| 2879 |
|
|
".rela.bss");
|
| 2880 |
|
|
BFD_ASSERT (s != NULL);
|
| 2881 |
|
|
|
| 2882 |
|
|
rela.r_offset = (h->root.u.def.value
|
| 2883 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 2884 |
|
|
+ h->root.u.def.section->output_offset);
|
| 2885 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_COPY);
|
| 2886 |
|
|
rela.r_addend = 0;
|
| 2887 |
|
|
loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
|
| 2888 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 2889 |
|
|
}
|
| 2890 |
|
|
|
| 2891 |
|
|
/* Mark some specially defined symbols as absolute. */
|
| 2892 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
| 2893 |
|
|
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
|
| 2894 |
|
|
|| strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
|
| 2895 |
|
|
sym->st_shndx = SHN_ABS;
|
| 2896 |
|
|
|
| 2897 |
|
|
return TRUE;
|
| 2898 |
|
|
}
|
| 2899 |
|
|
|
| 2900 |
|
|
|
| 2901 |
|
|
/* Finish up the dynamic sections. */
|
| 2902 |
|
|
|
| 2903 |
|
|
static bfd_boolean
|
| 2904 |
|
|
microblaze_elf_finish_dynamic_sections (bfd *output_bfd,
|
| 2905 |
|
|
struct bfd_link_info *info)
|
| 2906 |
|
|
{
|
| 2907 |
|
|
bfd *dynobj;
|
| 2908 |
|
|
asection *sdyn, *sgot;
|
| 2909 |
|
|
struct elf32_mb_link_hash_table *htab;
|
| 2910 |
|
|
|
| 2911 |
|
|
htab = elf32_mb_hash_table (info);
|
| 2912 |
|
|
dynobj = htab->elf.dynobj;
|
| 2913 |
|
|
|
| 2914 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 2915 |
|
|
|
| 2916 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 2917 |
|
|
{
|
| 2918 |
|
|
asection *splt;
|
| 2919 |
|
|
Elf32_External_Dyn *dyncon, *dynconend;
|
| 2920 |
|
|
|
| 2921 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 2922 |
|
|
BFD_ASSERT (splt != NULL && sdyn != NULL);
|
| 2923 |
|
|
|
| 2924 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
| 2925 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
| 2926 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 2927 |
|
|
{
|
| 2928 |
|
|
Elf_Internal_Dyn dyn;
|
| 2929 |
|
|
const char *name;
|
| 2930 |
|
|
bfd_boolean size;
|
| 2931 |
|
|
|
| 2932 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 2933 |
|
|
|
| 2934 |
|
|
switch (dyn.d_tag)
|
| 2935 |
|
|
{
|
| 2936 |
|
|
case DT_PLTGOT: name = ".got.plt"; size = FALSE; break;
|
| 2937 |
|
|
case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
|
| 2938 |
|
|
case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
|
| 2939 |
|
|
case DT_RELA: name = ".rela.dyn"; size = FALSE; break;
|
| 2940 |
|
|
case DT_RELASZ: name = ".rela.dyn"; size = TRUE; break;
|
| 2941 |
|
|
default: name = NULL; size = FALSE; break;
|
| 2942 |
|
|
}
|
| 2943 |
|
|
|
| 2944 |
|
|
if (name != NULL)
|
| 2945 |
|
|
{
|
| 2946 |
|
|
asection *s;
|
| 2947 |
|
|
|
| 2948 |
|
|
s = bfd_get_section_by_name (output_bfd, name);
|
| 2949 |
|
|
if (s == NULL)
|
| 2950 |
|
|
dyn.d_un.d_val = 0;
|
| 2951 |
|
|
else
|
| 2952 |
|
|
{
|
| 2953 |
|
|
if (! size)
|
| 2954 |
|
|
dyn.d_un.d_ptr = s->vma;
|
| 2955 |
|
|
else
|
| 2956 |
|
|
dyn.d_un.d_val = s->size;
|
| 2957 |
|
|
}
|
| 2958 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 2959 |
|
|
}
|
| 2960 |
|
|
}
|
| 2961 |
|
|
|
| 2962 |
|
|
/* Clear the first entry in the procedure linkage table,
|
| 2963 |
|
|
and put a nop in the last four bytes. */
|
| 2964 |
|
|
if (splt->size > 0)
|
| 2965 |
|
|
{
|
| 2966 |
|
|
memset (splt->contents, 0, PLT_ENTRY_SIZE);
|
| 2967 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0x80000000 /* nop. */,
|
| 2968 |
|
|
splt->contents + splt->size - 4);
|
| 2969 |
|
|
}
|
| 2970 |
|
|
|
| 2971 |
|
|
elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
|
| 2972 |
|
|
}
|
| 2973 |
|
|
|
| 2974 |
|
|
/* Set the first entry in the global offset table to the address of
|
| 2975 |
|
|
the dynamic section. */
|
| 2976 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 2977 |
|
|
if (sgot && sgot->size > 0)
|
| 2978 |
|
|
{
|
| 2979 |
|
|
if (sdyn == NULL)
|
| 2980 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
| 2981 |
|
|
else
|
| 2982 |
|
|
bfd_put_32 (output_bfd,
|
| 2983 |
|
|
sdyn->output_section->vma + sdyn->output_offset,
|
| 2984 |
|
|
sgot->contents);
|
| 2985 |
|
|
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
| 2986 |
|
|
}
|
| 2987 |
|
|
|
| 2988 |
|
|
if (htab->sgot && htab->sgot->size > 0)
|
| 2989 |
|
|
elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
|
| 2990 |
|
|
|
| 2991 |
|
|
return TRUE;
|
| 2992 |
|
|
}
|
| 2993 |
|
|
|
| 2994 |
|
|
/* Hook called by the linker routine which adds symbols from an object
|
| 2995 |
|
|
file. We use it to put .comm items in .sbss, and not .bss. */
|
| 2996 |
|
|
|
| 2997 |
|
|
static bfd_boolean
|
| 2998 |
|
|
microblaze_elf_add_symbol_hook (bfd *abfd,
|
| 2999 |
|
|
struct bfd_link_info *info,
|
| 3000 |
|
|
Elf_Internal_Sym *sym,
|
| 3001 |
|
|
const char **namep ATTRIBUTE_UNUSED,
|
| 3002 |
|
|
flagword *flagsp ATTRIBUTE_UNUSED,
|
| 3003 |
|
|
asection **secp,
|
| 3004 |
|
|
bfd_vma *valp)
|
| 3005 |
|
|
{
|
| 3006 |
|
|
if (sym->st_shndx == SHN_COMMON
|
| 3007 |
|
|
&& !info->relocatable
|
| 3008 |
|
|
&& sym->st_size <= elf_gp_size (abfd))
|
| 3009 |
|
|
{
|
| 3010 |
|
|
/* Common symbols less than or equal to -G nn bytes are automatically
|
| 3011 |
|
|
put into .sbss. */
|
| 3012 |
|
|
*secp = bfd_make_section_anyway (abfd, ".sbss");
|
| 3013 |
|
|
if (*secp == NULL
|
| 3014 |
|
|
|| ! bfd_set_section_flags (abfd, *secp, SEC_IS_COMMON))
|
| 3015 |
|
|
return FALSE;
|
| 3016 |
|
|
|
| 3017 |
|
|
*valp = sym->st_size;
|
| 3018 |
|
|
}
|
| 3019 |
|
|
|
| 3020 |
|
|
return TRUE;
|
| 3021 |
|
|
}
|
| 3022 |
|
|
|
| 3023 |
|
|
|
| 3024 |
|
|
#define TARGET_BIG_SYM bfd_elf32_microblaze_vec
|
| 3025 |
|
|
#define TARGET_BIG_NAME "elf32-microblaze"
|
| 3026 |
|
|
|
| 3027 |
|
|
#define ELF_ARCH bfd_arch_microblaze
|
| 3028 |
|
|
#define ELF_MACHINE_CODE EM_MICROBLAZE
|
| 3029 |
|
|
#define ELF_MACHINE_ALT1 EM_MICROBLAZE_OLD
|
| 3030 |
|
|
#define ELF_MAXPAGESIZE 0x4 /* 4k, if we ever have 'em. */
|
| 3031 |
|
|
#define elf_info_to_howto microblaze_elf_info_to_howto
|
| 3032 |
|
|
#define elf_info_to_howto_rel NULL
|
| 3033 |
|
|
|
| 3034 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup microblaze_elf_reloc_type_lookup
|
| 3035 |
|
|
#define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name
|
| 3036 |
|
|
#define elf_backend_relocate_section microblaze_elf_relocate_section
|
| 3037 |
|
|
#define bfd_elf32_bfd_relax_section microblaze_elf_relax_section
|
| 3038 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup
|
| 3039 |
|
|
|
| 3040 |
|
|
#define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook
|
| 3041 |
|
|
#define elf_backend_gc_sweep_hook microblaze_elf_gc_sweep_hook
|
| 3042 |
|
|
#define elf_backend_check_relocs microblaze_elf_check_relocs
|
| 3043 |
|
|
#define elf_backend_copy_indirect_symbol microblaze_elf_copy_indirect_symbol
|
| 3044 |
|
|
#define bfd_elf32_bfd_link_hash_table_create microblaze_elf_link_hash_table_create
|
| 3045 |
|
|
#define elf_backend_can_gc_sections 1
|
| 3046 |
|
|
#define elf_backend_can_refcount 1
|
| 3047 |
|
|
#define elf_backend_want_got_plt 1
|
| 3048 |
|
|
#define elf_backend_plt_readonly 1
|
| 3049 |
|
|
#define elf_backend_got_header_size 12
|
| 3050 |
|
|
#define elf_backend_rela_normal 1
|
| 3051 |
|
|
|
| 3052 |
|
|
#define elf_backend_adjust_dynamic_symbol microblaze_elf_adjust_dynamic_symbol
|
| 3053 |
|
|
#define elf_backend_create_dynamic_sections microblaze_elf_create_dynamic_sections
|
| 3054 |
|
|
#define elf_backend_finish_dynamic_sections microblaze_elf_finish_dynamic_sections
|
| 3055 |
|
|
#define elf_backend_finish_dynamic_symbol microblaze_elf_finish_dynamic_symbol
|
| 3056 |
|
|
#define elf_backend_size_dynamic_sections microblaze_elf_size_dynamic_sections
|
| 3057 |
|
|
#define elf_backend_add_symbol_hook microblaze_elf_add_symbol_hook
|
| 3058 |
|
|
|
| 3059 |
|
|
#include "elf32-target.h"
|
